@curiousaboutthoughts it’s a knotty one. Like many children of alcoholics you carry the imprint of that experience into adulthood & with that may come an exquisite form of hypervigilence to other people’s drinking behaviours & indeed even the smell of stale alcohol being sweated out. You have an early warning pissed-dar system.
Your friend has blipped up on that screen, this has affected you by taking you back to earlier experiences including the divided loyalties about coping with an alcoholic parent(s). So you now have the current dilemma about on the one hand being loyal to your friend who you really like, who has not directly hurt your feelings - unlike how your parents did at times - & on the other hand doing the right thing about raising your concern about your friend & her children’s wellbeing.
How do you act without betraying her trust &/or colluding with her drinking?
Tough one as you cannot know the consequences of sharing your concerns with the school or any other agency. I suggest that you pause a short while before you do that, not to duck the issue, but to give your self a bit of breathing space.
The important thing is to take care of your self first, the oxygen mask on the plane, by acknowledging your feelings as that adult child. You may find it helpful to join an Al-Anon family group meeting or contact National Adult Children of Alcoholics.
www.al-anonuk.org.uk/
nacoa.org.uk/
Maybe talk this through so that you are centred as your adult self rather than the child you were then. As you say, you cannot directly tackle your friend as this may be counter productive. But if you share your dilemma with people who understand you may find taking the difficult step of talking to the school easier to manage.
You spoke of the isolation you felt as a child, & understandably you may be projecting that onto her children. Perhaps taking a positive supportive approach by inviting her kids round for tea after school, maybe a half term day out with your kids allows you to offer them some quiet undemanding everyday fun & support. You can be the kind adult family friend now that you needed back then. This is a decisive course of action, not a fudgey compromise.
If you do this, maybe invite your friend too. If she comes along or not, do not offer any booze (somehow I think that you don’t anyway). If she is compelled to drink, then she takes responsibility for that. But it is OK to invite just the kids for hassle-free play dates.