So this might be long but I'll try to explain properly.
My mother is a functioning alcoholic. She has been for twenty years. She often drove drunk with my siblings and me in the car, would drink heavily pretty much every night. She was widowed unexpectedly about 5 years ago and got some therapy. I'd gone NC for about 6 months and so did my sibling for 2 years. She's never apologised for anything - she always comes back to it being your fault by some circular argument. She's very clever so it's hard to argue against her.
I've got married, had 1 child and the second is a newborn. I had several PNa and PND with my first and I've been worried for a while about how to deal with the escalating issues with my mum. She has done some childcare free for us which is kind of her - this started originally on a trial basis with my first and we refused to let her drive our LO just in case of any alcohol issues - but as I said we'd noticed some improvement since she was widowed and weren't really expecting issues.
Over the last month, she has done childcare twice. She turned up drunk the first time, telling me that she was probably still drunk from the night before. I wasn't happy and childcare didn't go ahead. The second time she turned up hung over and got very angry at me for questioning whether she was sober enough to do childcare saying I was being stupid and ridiculous.
We (DH and I) phoned her to talk it through last week once LO had gone to bed. The conversation didn't go well - she hasn't accepted she did anything wrong and wants an apology from me for not asking whether she'd had a nice time out (once for an Xmas party and the second for her birthday). I've ruined her birthday and been rude and vicious by asking her whether she was capable of looking after my LO. She told me I was using my child as a weapon so DH and I put the phone down.
I have no idea what to do to move forward so I'm looking for advice really. I can't stop going over the whole situation again and again. AIBU?