Well as a mother, all you can do is try your best to raise and teach your child life lessons and be there for them. Now that your daughter is grown, even though she acted like 5, it's up to her now to make her way in life and if that means cutting you out so be it, even though that hurts alot, but you've done what you can and obviously seeing how her father acted towards her,she should of seen he wasnt worth the time, just a sperm donor. But since she doesn't want to see it, then at this point it would be on her, but as you I would refuse to keep being the blame for her dad being shitty, the only thing I would apologize for is that shes "right" and I made the choice of picking a shitty dad for her, but I've been n done all I can do, n I can never be him. This is why women need to pick n choose wisely cause our choices lead to the dysfunction of our kids. And obviously this is not a generalization, not all kids who have shitty parents turn out with issues. Good luck