The first time Hermione intervened too early, Tom learned something useful about her.
It happened outside Charms, in one of those in-between corridors where the school's order briefly loosened. Students were changing rooms, speaking over one another, checking books, reassembling themselves from the shape of one lesson into the anticipated demands of the next. Such places had become increasingly important to Tom because they were rich with threshold states not yet stabilized by formal structure. Embarrassment lingered there. Panic arrived there. Relief turned into overconfidence there. Classrooms produced tensions; corridors often revealed what those tensions became.
The Ravenclaw girl was close to tears before anyone spoke to her.
Tom noticed the signs at once because by now they had become as legible to him as written language. Her breathing was too shallow. Her search pattern lacked sequence. She kept looking into the same pocket of her bag twice as if repetition might transform forgetting into recovery. Her face was reddening not from weeping yet, but from the mounting humiliation of being unable to control herself in public. She had lost an assignment parchment—or believed she had lost it—and the more she looked, the less likely it became that she would actually find it in the state she was in.
A well-timed sentence there could have done considerable work.
Not overtly. Not by solving the immediate problem; immediate solutions were often wasted on threshold moments because they left the underlying fault line intact. But one accurate sentence, delivered when panic was beginning to harden into self-narrative, could alter the child's understanding of competence, blame, memory, and recovery all at once.
Tom had already begun identifying the exact shape of the opening.
Then Hermione stepped in.
"You need to calm down first," she said, reaching for the student's arm.
The sentence itself was sensible. That was one of the reasons it failed. Sensible interventions often do, when delivered in the wrong emotional order. Hermione's mind had reached the correct procedural logic before the other girl's distress had become structurally receptive to it. She was trying to apply solution before stabilization.
The Ravenclaw recoiled.
Not dramatically. Just enough.
Enough to break the attempted contact and make the corridor moment sharpen rather than soften. The girl looked at Hermione not with gratitude but with the stunned woundedness of someone who has just had her panic named from outside before she herself can bear to name it inwardly.
Hermione stopped. Wrong-footed.
That mattered too. Tom saw at once that she had expected the intervention to land. Not arrogantly—Hermione was not vain in that particular way—but with the confidence of someone whose diagnosis was accurate and who therefore assumed its delivery would help. The recoil disrupted not only the distressed student's state but Hermione's.
Then Hermione made the second mistake.
She tried again, faster.
"If you keep panicking, you won't remember where you put it."
Accurate.
Sensible.
Wrong.
Because the girl was not yet ready for procedural instruction. She was still inside pure distress, too flooded by public self-consciousness to receive method without experiencing it as further exposure. The result was immediate. Her face flushed harder, which meant the shame had now attached not only to the lost parchment but to having been managed in front of others. She muttered something incoherent, half apology and half refusal, then fled down the corridor with the abrupt desperate speed of someone who has concluded that escape is the only remaining way to preserve dignity.
Hermione stood very still.
Tom approached only after the moment had fully collapsed.
Timing mattered here too. Had he spoken while the girl was still present, Hermione might have defended herself from social pressure rather than heard the structure of the error. The student's departure left behind something cleaner: Hermione, embarrassment, and the open shape of a failed intervention.
"You were too early," Tom said.
Hermione turned on him at once. "I wasn't asking."
"No," Tom replied. "You were attempting control."
The accusation hit harder because it was true in form even if not in intent.
Hermione's face changed—not with fear, not even primarily with anger, though anger arrived quickly enough after. What crossed it first was furious self-recognition. She knew immediately what he meant, and that made denial impossible in the way she most hated: internally.
"I was trying to help," she said.
"Yes," Tom replied. "That is often how bad timing introduces itself."
For several seconds she could not answer.
Tom continued past her without another word.
That restraint was intentional. Anything more would have weakened the lesson by allowing her to reclassify the moment as personal hostility rather than technical correction. Tom did not need her humiliated in the broader social sense. He needed her newly suspicious of her own threshold-reading. Uncertainty in a competent opponent often produced more useful friction than defeat did.
What he had learned was not merely that Hermione could misread threshold conditions. Of course she could; everyone could. The more important discovery lay in how she misread them. Harry moved too late as often as too early because he translated moral urgency into confrontation and often waited for wrongness to become plain enough to oppose. Hermione failed from the other direction. Once she became intellectually certain of the correct intervention, she had difficulty delaying it until the emotional state could bear it.
She moved too early when distress became visible.
Not because she was impulsive in the ordinary sense. She wasn't. She remained more controlled than most students her age. But she possessed a particular kind of moral urgency—one refined through intellect rather than instinct. Once she believed the right answer had been found, inaction felt to her like negligence. That made waiting unusually hard for her even when waiting was structurally necessary.
That could be exploited.
Not to destroy her.
To force inefficiency into her resistance.
Hermione, meanwhile, remained in the corridor far longer than the moment warranted, the shame of it blooming inwardly with terrible speed precisely because Tom's comment had arranged her own self-analysis before she could do it gently for herself. She replayed the sequence at once: the girl's breathing, the reach for the arm, the second sentence, the recoil. Tom was right. That was what made it so intolerable. He had not invented the error. He had named it before Hermione could soften it into something more forgivable.
By the time she found Harry later and told him what had happened, she had already passed through anger and arrived at a colder, more difficult state.
"He was right," she said finally.
She hated the words as she spoke them.
Harry, to his credit, did not make it worse by pretending otherwise. He looked grim rather than comforting, which was exactly what she needed and exactly what made the exchange hurt more.
"I know," he said.
That was somehow worse than reassurance would have been. Comfort might have let her classify the incident under ordinary human error and move on. Harry's agreement held her to the full shape of the mistake.
They sat with it for a while.
Then Hermione did what she always did when injured by truth: she organized it.
"Not all distress is a threshold," she said slowly, mostly to herself. "And visible panic isn't the same as receptivity."
Harry nodded. "Tom waits for the panic to mean something first."
Hermione's mouth tightened. "Yes."
That, too, was awful. It meant Tom's threshold-reading was not merely about emotion level. It depended on transformation—when distress ceased being raw experience and became self-interpretation. She had entered too soon, while the girl was still only overwhelmed. Tom would have waited until the student had begun forming a conclusion about herself from the panic. That was where his methods took root.
Hermione wrote the lesson down later, though she despised having to do it.
Early intervention can worsen exposure if distress has not stabilized into receptivity.
She stared at the sentence long enough to hate the shape of it. It sounded clinical. Worse, it sounded like something Tom would say. That bothered her for reasons she could not entirely explain. Perhaps because every step of learning his method risked a kind of resemblance—not moral resemblance, not even practical imitation in the larger sense, but similarity of attention. She was becoming better at reading the same structures he read, and while that made resistance possible, it also contaminated the work with a discomfort she could not shake.
Across the castle, Tom reviewed the incident differently. Hermione had now confirmed two useful traits in herself. First, she could learn quickly enough to interfere with him when the opening was clean. Second, under certain emotional conditions, her own urgency could still be pushed out of sequence. The combination made her more interesting, not less. She was becoming a serious opponent precisely because her errors were no longer childish. They were technical.
That was good.
Technical opponents could be manipulated through complexity rather than provocation.
That night, in the learning space, Andros watched Tom with unusual carefulness. He could tell, by now, when Tom's calm concealed not serenity but active revision.
"You have learned something unpleasant," he said.
Tom did not look up from the exercise in front of him. "Something useful."
"That was not what I said."
"It is what matters."
Andros sighed very softly. "About whom?"
Tom hesitated only once before answering. "Granger."
That alone made Andros more attentive. He knew the names now, not deeply, but enough to understand recurring variables in Tom's thought. "And?"
Tom's tone remained level. "She is correct too early when emotion is visible."
Andros frowned slightly. "That sounds like the sort of sentence one should never want about another person."
Tom glanced at him. "Want is irrelevant."
"That, too, is something one should never say too often."
Tom let the exercise collapse rather than continue the exchange. For a moment the objects in the air lost order and fell gently to the floor of the constructed space.
"Hermione Granger," Andros said after a while, trying the name with deliberate normalcy, "is trying to stop you."
"Yes."
"And you intend to use her attempts to improve your own method."
"Yes."
Andros's face remained still, but his sadness deepened. "There are moments," he said, "when I think the most frightening thing about you is not that you are cruel. It is that you are educable in all the wrong directions."
Tom considered that and did not answer.
Because it was not inaccurate enough to dismiss.
Back in the dormitory, Hermione lay awake longer than Harry did for once. Her thoughts circled the corridor scene over and over, not because the event itself was large but because of what it implied. She had crossed an unseen line in the work. Up to now, most of her errors had been errors of description—too broad, too vague, too late, too interpretive. This was different. She had failed in application. She had known what she meant to do and had done it badly.
That made the whole effort feel more real.
And more dangerous.
Not because Tom had won some small exchange. She was not childish enough to think in those terms anymore. But because the field itself had become more technical than she was ready to admit aloud. To interfere with Tom properly, one would need not only moral resolve or analytic intelligence, but timing fine enough to distinguish between pain, shame, panic, readiness, and the exact instant at which another human being could bear being named.
That was an awful thing for children to need to know.
Which, Hermione thought grimly as sleep finally approached, was probably part of why Tom was learning it so well.