Bi polar grandmother .Should I get away from my children?

I am a 54 year old mother of a 32 year old daughter and a grandmother to a 8 year old granddaughter . 4 years ago I moved away from the town we lived in in order to change my life and enjoy life 3 months later my daughter and grandaughter moved to where I moved. I took care of my grandaughter and daughter in my home for 2 years. She met someone and got their own home . I am having a problem with my grandaughter and she doesnt know who to look up to me or my daughter. I have never had a good relationship with my daughter and continue to have control issues with her(she is very controlling) as of lately I have been trying to distance myself from her but I feel like I am right back in the situation I was in before I moved away. I am condidering moving away again but am un easy about this because of my grandaughter. Does it make any sense to keep moving away from my daughter so I can have a life or should I think about my grandaughter and just push my feelings down and stay here. I do not see my grandaughter unless my daughter says I can have her for the weekend. I feel uncomfortable around her and her family unit because of the control thing with her I had a boyfriend when Imoved down here and he left last year because she made my life unbearable . It is really hard for me to get personal with the other because of my bipolar,What should I do?