Dealing With Mental Illness

I have a friend who is diagnosed as bipolar. She is a very close friend of mine for nearly 25 years and we were roommates in college. Right now she is in the angry, pushing away phase, and it is difficult to hear her hurtful comments and not lash back. I'm hanging in there though and trying to remember that this is not her, but that the friend I love is in there somewhere and I have to hang on and keep the lines of communication open. She went through a divorce from an abusive husband who likes to cause trouble in any way he can just for the sake of doing it, and right now that it her excuse for not taking her medicine: her ex will find out and use that as an excuse for taking their daughter away from her. What she isn't understanding is that there isn't much chance of that to begin with, but there is a greater chance if he finds out she has this condition and ISN'T taking her meds! Please pray for her and her family and for me as I try to help her deal with this.