Sorry to state the obvious, but stop trying so hard. Quit talking about couples therapy, stop trying to make it up to her and sorry to say this, it's time to let your mistakes stay in the past. Just learn from them and move on, it doesn't sound like she wants to go to therapy or get back together any time soon.

Why? Because all you're doing is opening yourself up to more ear-bashing, pain and disappointment. She's obviously and correctly hurt, but it doesn't entitle her to keep being hurting you back forever more esp as it would be so much better for your daughter for you both to have a courteous relationship.

If it makes you feel better, apologise one more time and allow yourself to let some of the guilt and pain go. We make mistakes, we are human. Please don't let yourself be a broken man.. and try to look after yourself. You made mistakes sure, but it doesn't mean that your life should stay out of control. Please takes steps to make things better for yourself, and the first one is to forgive yourself.

Hugs