Thank you, JKGrandma!  As usual, I agree with you. My sister does see a therapist but I think she needs a new one as she's been going to him for years and, if anything, her problems are getting worse.  He is very mild-mannered and just sits and agrees with her.  I got her to try a therapist who is tough, no-nonesense but fair and very insightful.  She thought he was too "mean" because he challenged some of her stories--and never went back.

It's also very frustrating because my mother tells me living with my sister "is hell" but when I say she should insist she move out, she rips into me, saying "Do you want her to live on the streets?  Would that make you happy?!"  Then, there's my sister saying the cause of her migraines is "living with mother." And round and round they go. I do feel my mother is playing a significant role in this situation--mainly because she doesn't want to live alone, even though she's very healthy physically.  So she enables and supports my sister while my sister stays in bed. If ever there was a time for tough love, this is it.

My sister takes topamax but also takes a lot of other drugs so perhaps the benefits of the medication are being diminished.

I do believe my sister needs inpatient care to wean her off all the drugs and then see what's going on physically and psychologically.  I have questioned the bi-polar diagnosis because how can you accurately diagnose anything when someone has all sorts of drugs in their system, which may be altering their behavior??!

Thank you again. It is a mess and I am thankful I will soon be moving further away as it's just hard to watch.