You're deriving way too much from an uninformative article. "Given the drugs by her parents" doesn't mean they were prescribed by her parents. Did the article say whether there was no doctor involved?

Also. The girl had an autoimmune disorder, for which the same drugs are commonly used. Did the article happen to say whether or not she was already on the drugs?

The article also says nothing about whether the drugs had anything to do with her demise. It sure does imply that, though.

This is a cherry picked article.