Okay wait if she still has the antidote to the poison (I know she’s sick because of the poison but that doesn’t necessarily mean she doesn’t have any more, she could just be sick because she’s always been taking minor amounts of it), then couldn’t she give a tiny piece to the doctor secretly or something and have them analyse it to find out what poison the antidote is for?
Okay wait if she still has the antidote to the poison (I know she’s sick because of the poison but that doesn’t necessarily mean she doesn’t have any more, she could just be sick because she’s always been taking minor amounts of it), then couldn’t she give a tiny piece to the doctor secretly or something and have them analyse it to find out what poison the antidote is for?