I'm so over my mother!!!

ok so my hubby is on depolyment anf I decided instead of sitting in my house 100s of miles from family that I would come home with my 3 year old to enjoy time with his side of the family and mines nothing can go wrong right??ha wrong... so I've been home in new Orleans all of a month and a half staying at my moms house where my cousin also lives. so the other day me and my cousin are sitting having a conversation about him gearing up to move out at the end of the year. now knowing my cousin he knows jack shut about how the real worlds work and he been living with my mother for 4 years and she is a pathological liar and a thief. so I tell him dude you need to check your credit make sure your good. I show him how to sign up for credit karma and he gets in and dude score is in the 400s. yes yes I said 400s. my mother gave stolen 1600$ in credit card on his credit that he found out was her when he called the companys. so when she comes home from work he confronts her. see he not really one to be confrontational but this was the final straw. so she gets mad denys it all the bull crap that comes out of her mouth so he just walks away because he is tired of the lies. the next I'm bringing him to work and he tells me oh yea your mother is going around telling people that you abuse your child. I was livid because no have never and my child is beyond spoiled for a 3 year old so I'm beyond pissed. so yesterday come and her "friend" who fixes her car comes in and wants to get all up in me and my cousin face because my mother got confront about stealing my cousins credit and she went back to him and spun a story about how we was so wrong in how we confronted her. oh yea sid I tell you she is facing having thyroid cancer and so we super wrong because she "sick"and we stressing her out. I've been here a month and a half and she have made lies about how I raise my child have came for my life and my marriage, but at the end of the day I have been married for 5 year and she still jumping from boyfriend to boyfriend. I'm so done with her if it wasn't for I promised my grandmother that I'll be here for her and my little cousin birthday I'll he gone