Are you an addiction specialist? It sounds like you are diagnosing your sister--something we are warned against in AA.
How do you KNOW the medications aren't appropriate for her mental conditions?
You might encourage her to have a doctor who does specialize in alcoholism/addiction and mental health issues review her meds to be sure they are appropriate, but that's about all you have the right to do. Lots of people in AA take psychiatric medications, and that is considered a matter between the individual and their doctors.
It doesn't sound like she is interested in your managing her medications, either.
My suggestion is that you back off and disengage from your sister's recovery process.