If she got caught in her lie, then the only way to explain it was that her black bandage, Evil Spirit, had become corrupted or had become corrupted quite recently.
Only that reason would be enough to explain its behaviour, but once it was known, they would have no other choice but to kill it.
It would be a part of their duty to exorcise it before it could become a greater threat.
If she were desperate enough to maintain her relationship with them, the only option that she had would be to give it up.
If she were unable to do so, then it meant that she would have to stand against them to protect it from being exorcised.
Either she could maintain her relationship with them and lose all of the efforts she had put into it, or she could try to preserve it and lose their relationship.
There were no other alternatives, as Evil Spirits could not be turned back to what they once were, and the only way to deal with them was to exorcise them.
