Hi Pipkin and welcome to SR
What I have learnt since joining SR is that alcoholism is a family disease that results in varying levels of family dysfunction.
I too was like your mother and like you, up until last year, I thought my children were shielded from addiction.... or so I believed. I now know different. They have interacted with their Uncle, who at age 40, is middle-stage alcoholism. They have interacted with their Nana who is a chronic enabler and co-dependent. They interact with their Dad whose own Dad died of alcoholism. They interact with me whose Dad died of alcoholism and who is codependent and was everyone's caretaker.
They may not be living with active addiction, like I did, but the resultant family behaviours of alcoholism and dysfunction surround them. What I can do is love them, be a good parent, be aware of my roots and model healthy adult behaviours.
You too can be there and be aware for your siblings and your own children.
Keep posting, IWTHxxx