There's another suspicious point: Miss Tang once told them that her mother's close friend told her that Isaac York went to her mother to ask for their token of love back, but her mother refused, or couldn't produce it, which led Isaac to angrily push Diana Thomas to the ground, triggering her asthma attack and causing her death.
And the reason Diana Thomas couldn't hand over the token of love was because she had sold or pawned it, so she couldn't return it to Isaac York.
From this angle, if the token of love was that Jade hair crown, then did that mean the token of love actually belonged to Isaac York?
Did Isaac York give this Jade hair crown to Diana Thomas as a token of love only because he didn't know its value at the time?
And then, only after he later learned its value, did he, post-breakup and regardless of decorum, insist on taking it back?
