Whether or not she will get help, you should. I would offer to go to couples' therapy. If she takes you up on that, terrific. But if she is not willing to go, you should find some emotional support for yourself.

My brother, who is a minister, has a saying that helps: "If I didn't break it, it's not up to me to fix it." Your first job is to see to your own emotional health. You can't make another person's decisions for them.