I have enough background to tell you it is very difficult to speculate on what might have happened, only that what is described does happen sometimes. People can have reactions to medication unexpectedly - either changes in dose to a medication they already are taking, interactions when new medications are added, or reactions to a new medicine. We think of side effects like a rash, stomach upset, etc but often neglect to think about or mention rarer but more disturbing side effects like hallucinations, psychotic episodes, suicidal ideas, etc.
Just by way of example, we are in the middle of a bad flu season. Tamiflu causes rare instances of hallucinations and bizarre behavior. So can many commonly used antibiotics. So can the smoking cessation drug Chantix. It's entirely possible she was given a new prescription and had this sort of bad reaction as described.
So her story is entirely within the realm of medical possibility. There is really no reason to question her story or cast doubt on her after what was no doubt a frightening episode. I'm just glad she was found safe and hope she's doing well now.
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