Not an AIBU but not sure where to post, and posted for traffic also.
Background: left my partner Dave due to massive drinking issues and verbal abuse while drinking (think 10 cans followed by a bottle of Jack Daniels on a weekend binge). Dave has a 6 year old boy to Anna who passed away before the child turned 2.
Dave's drinking has got to a point where his child's welfare has come into question. Anna's mum and I have become quite close although she lives 90 minutes away. She would love to go for custody but wouldn't like to uproot the child. She has suggested I try for custody to keep him in his home town and is happy to back me 100% should I choose to do this.
I am not blood but have been a large part of the child's life for many years and would love for him to have a better chance at life than he'll have with his dad. Dave's mum was an alcoholic and being a family disease I'd hate for the child to be affected also.
WWYD in this situation?
(Names are changed)