Emily-
Don't even think about Kevin or your marriage right now. It is not time to worry about that, and you can't control that. We are not talking about saving the marriage, or if you do or don't want it. We are talking about saving Emily and her girls. Everything else is for later.

Asking for help is not weak. You came here for help, it is being offered (well maybe shoved down your throat) freely. Accept it. Needing, accepting, and giving help is what makes us human. You don't have to get through this yourself.