I have a rant.. so apologies.. my grandma (young family) is not such a great person. She enables my crackhead uncle, she…

I have a rant.. so apologies.. my grandma (young family) is not such a great person. She enables my crackhead uncle, she starts fights with everyone, she has disowned me numerous times, then acts like nothing happened and we are all good. She knows I'm pregnant and has been nice, then one day we get into a huge fight and I flip on her.. haven't talked to her and she claims she has no idea why I would ever be mad at her... I don't want my child around her.. she is good with kids but when my child gets older it will probably be limited contact.. she wants to babysit and stuff... I'm like can I just be pregnant right now?!?!.. ugh. She can be such a wonderful person and turn around and be evil and backstabbing.. I just don't know how to handle her anymore.. while my hormones are raging I'm just going to let it be or I'll say something awful..