I agree with mgran. My husband always told my daughter that mommy is sick right now. She does not mean to be so mad at you or she just does not understand what she is doing. They had to walk on eggshells till just recently. My daughter is 16 now and she is in therapy sessions. It really took a toll on her life. I think all children should go to a T sooner or later to help deal with a parent who is BP or any other MI. If she is already feeling resentful I think its time for her to see a T. The sooner she gets the help from someone who can explain it better then you and your husband the better. You don't want her to be the age my daughter is and feeling this way till then. It destroys them emotionally and can lead to other problems in their life. My daughter now has issues with relationships. She pushs people away in fear of getting close to them and them leaving. Wish you well and hope you find the right answer.