Again OP, this should not be your main concern, having your heart broken is awful. It happens to I would say almost everyone.
I dont think your talking is the only issue. It is never really one thing, and by your own posts your relationship was/is awful. You told your friends he was abusive?
You must focus on what is best for your dd. Clinging on to a failed relationship that was fundamentaly broken in many ways, and living in an environment that is toxic will be doing untold damage to her. Is that what you want for your dd? to be damaged and hurt because you will not seek help and move from a situation that is toxic? I am sure it isnt, but this situation has been going on for at least 6 years, perhaps not the divorce but the toxicity.
Your dd needs you focus on improving your situation, finding somewhere to live, and taking up any, and all help offered. so with work and time you can stop obsessing over a broken relationship and a man, who if you posts are accurate does not love you. His reasons for not loving you are irrelevant.
Do what is the right for your dd. Get help from professionals. Move to supported living, and start to rebuild you and your life.