Mason -- the surprising part for me is that she left you AND her child. Sounds like she's going through an identity crisis. A lot of women hit that crisis time in their early to mid-30s. It's the same crisis men have in their late 40s to mid-50s. That feeling of Is THIS all there is. It's also a time when women seem to want to throw off all the bonds that they feel shackled to, the preprograming that comes with reaching that age for women -- that being a wife and mom should always be fulfilling, that the new woman can DO IT ALL. I can remember at that age one day looking at my hands shriveling in the dishwater and thinking that I simply COULD not stand to rinse and dry one more dirty glass -- EVER!
I agree that she should seek counseling, and you should as well. You might be able to weather this storm, but it's more doubtful without help.
Good luck to you and your family.
-------------------- "To love oneself is the beginning of a lifelong romance"
- Oscar Wilde