Tweetthat really sucks, you shouldnt worry with a past like that. My parents always tried to make the other look bad when they went through a messy divorce. Just be the strong one let your daughter know that her mom can see her as much as she wants (if that is what you are saying) it all up to her. Oh and be honest with your kid, I could always tell a lie when my parents started that shyt, kids at that age are not given enough credit imo.
i think you should also take her to court to get child support. If your ex wants to be a part of her life she should help even though it sounds like you dont need it. You could always put that money in a savings account or something for your daughter.
Good luck and keep your head up.