This is the one answer that no one can give you. It's intensely personal, and only you can decide if you're done or not. I myself waffled back and forth and back and forth no more than a half a dozen times.
It's a serious, life-altering decision.
I will ask you only two questions, which may help:
1. Are you still in love with her?
2. Do you believe she is a woman of quality and character, that you think can add to your life and help form your daughter's?
Whatever your decision is, I do think you need to make it.