Do what she says she is going to do for herself--get your life straight.
This is one of the few times in your life where few will fault you for putting yourself and your own interests first. Pursue things you enjoy that take your mind off of it and get you out there--exercise, go to concerts, go to shows, do whatever it is you like to do, and ESPECIALLY do those things that you liked to do before you met her but she didn't like to do.
Seriously. It helps. Call all your friends up and invite them to join you for a night out. Go and have fun.