Jinn, it sounds like you've handled this as well as could be expected. But your kids are old enough now that they will make their own decisions with the information they have. You can only guide them so much and I think you've been very giving regarding your mother's feelings; but for now there's only so much you can do. I do not think you should drive yourself crazy trying to manage all of these relationships. Instead, I'd make a goal of resolving these issues in the future as a part of your healing process.

Be safe.

Cyran0