Don't try to read too much in the ex's use of her last name. If your last name is the same as your S's, then that is the likely reason she continues to revert back to it for herself -- to associate herself with your children, not you.
Stuck sucks, don't it? Well, it's a process -- this getting unstuck; and it takes time -- often much more time than we had originally imagined.
But, yeah, I hate it when they think they've got you pinned down like that.
