P.G.
Don't move in together till your daughter is on your own. If you want to repair that relationship, focus on it. Your daughter is your daughter for the rest of your life IF she knows she is important to you. Your boyfriend MIGHT become your husband, but it is still in the might stage.
I can't speak to the relationship you have had with your daughter, but I can speak to the breakdown of the mother/daughter relationship when it's obvious that the mother's focus is on herself first. My mother has been and continues to be like this. She refuses to face it, and has damaged most of her family relationships because of it. I have a polite relationship with her, my sister doesn't deal with her at all. If my mother were to show up at my door, I would put her up in a hotel. DON'T allow this to happen.
If your boyfriend truely loves you and wants a deeper relationship with you, he will understand that you are a package deal for another year or so. If he loves and respects you enough to wait to move in, you know you have a special guy.
Good luck!