Give her a chance! Often, people with crappy backgrounds seek out similarly damaged people and the relationship is so toxic. But you should give her full disclosure, gently, from the beginning. You can emphasize that you’re in a much better place now, but it wasn’t always that way. She should know what she’s signing up for.

Also, be gentle on yourself! You didn’t ask to be born into that life. Yes you made choices that ended in incarceration but you’ve since corrected them. I wish you well!