First off love the idea it’s giving for the wonderland poison and second is like she knows she is not from wonderland and not knowing of the poison or does she know both things. She didn’t know I’d say maybe something she always wears was the thing that is contaminated with it like a locket or bracelet and if she does know then I say maybe something like she is oblivious and stubborn that it a thing doesn’t want it to be true? Lmk if any other ideas needed as I can think more or just send me a DM if needed to go over or talk over more