Wwyd about this.
My mother had an accident about 3 months ago (got into a fight whilst drunk 
) and ended up in ITU with a 'serious' head injury. We all thought she would die and despite being NC for 10 years I visited her and did the 'dutiful daughter' thing like everyone was telling me to do in case I regretted not saying good bye. 
Well, by some miracle she has survived this terrible life threatening injury and is now living back at home 200 miles from me. She phones and texts constantly. Starts at 6 and goes on all day. She spends her day getting wasted and driving my sister mad ( she lives close by), she's frequently in hospital. I feel I can't go nc again as my sister will be even more on the receiving end and I fear it will trigger a mega binge which will be her end. Although I often wish she'd died in the accident 
She is manipulative and a liar. She'll call and obviously be drunk but deny it, she plays my sister up against me constantly, she demands visits and cried about not seeing my children. I haven't seen her since she left hospital and I don't want my children near her. But how do I deal with this?
I've started only answering her messages once on alternate days and otherwise ignoring her. She sent 25 text messages today alone! To top it off DH has told me it's my fault for responding and I should cut her off. Not helpful. It all feels so much more complex than that.