Let it go man. She wants to eat the emotional cake that you give her, so let her go hungry.
You're a great father, and if you aren't, be the best father of all time. Don't let her make you feel like dirt.
I haven't read your story, but I get the gist of whats going on. Focus on YOU! YOUR needs, YOUR wants. If she doesn't come back or she's not sure, be the spouse no woman would want to leave. Be confident, be outgoing and always be nice and kind to her face/texts.
If you're happy and independent, what else do you need in life?
"Don't chase people. Be yourself, do your own thing, and work hard. The right people - the ones who really belong in your life - will come to you. And stay." ~ Will Smith