How to help a cousin/friend with bi-polar disorder/manic depression [View all]

Very worried about my cousin. She has been diagnosed with bi-polar disorder/manic depression. She is on medication that has serious side effects so she keeps trying to take as little as possible. This lets her disease take over and then she believes the therapists don't know what they are talking about. She also starts to believe that everyone but herself is crazy. She has tried suicide (I believe more than once) while off her medications and has landed in a psychiatric hospital several times because of this. I know people make light of being "off your meds" but this is no joke. She is in her mid-forties and always lived at home. She has had a hard time dealing with her father for years, and has finally decided she needs to move out - but she is not really in a position to do so. Her parents are in their late 70's/early 80's. I had lunch with her today and am very worried that she might be headed for another trip to the hospital. Any advice on how to her, if I can?