If she succumbed to any meds,
I reckon they weren't hers,
nor voluntarily taken by her.
JMO.
Since Beth didn't say what meds
they were, I would venture to
guess they aren't important
and they are legal. Like an
allergy medicine. (Just a guess.)
Having been on meds (still am), they would be colloquially defined as something a person is on and needs daily to function or to remain healthy...whether temporarily or permanently.
I think Beth is withholding because she either thinks it is irrelevant (and no one's business) or she was advised to do so by someone like the DEA or the FBI. Here meds might have meaning regarding her condition. If she were on antibiotics, she would refrain from drinking alcohol. If she were taking neuroleptics or antidepressants, she would keep her drinking to a minimum.
However, if someone had slipped rohypnol or another date rape drug in her iced tea or cocktail, it might have caused her death.