Dear M.,
I don't know if you will get my other message, I was interrupted, and am now back to finish with the end of the advice.
Go to a family of bipolar patients support group. I did that for about 2 months and it made a world of difference in how I reacted to the bipolar people in the family. It was never fun, and was tension filled, but I survived. Knowing the truth helps a lot - So do it, but not forever. You can get the gist of the science and the family situation in a month or two and get on with your life.
The second and equally important thing is for the bipolar person to take his or her medicine regularly. "They" do not like to take it - making all sorts of excuses - and never mind about that. Too bad. They are ill, and their illness hurts all members of the family and they need to show respect for the family and take their meds. - Good luck with that one. If they do not take the medication, then when they finally decide to get back on them, it will take longer for the medicine to be helpful, and SOMETIMES, it never does work again. So pray a lot and ask for guidance and then DO something. It is your life too.
My son's wife made his life miserable and finally her egocentrism KILLED him. umhum, it did. I tried my very very best to help her to stay beside her to guide and mother her and no, it didn't work. He should have left her many years ago, but he would not do it because of the marriage vows. How sad. I suffer everyday of my life missing him. He was a wonderful person, and did not get a chance to be a wise old man. He was only 46.
There you are - the truth. C. N.