You do need to pull that trigger. You aren't her doormat, nor should your family be. She made her own bed, let her fix it. You take care of yourself and your children. And you can't best do that while she is stepping on you on her way to the OM.
There are moments in this life when you are so confident in the rightness of your actions, that not even for a second do you consider the option that you might be wrong.
