Hi V.,
What I am about to write is not from a place of blame, so please hear that. There are things about what you describe that resonate with my own family life, so hear that, as well!
Here's my 2 cents: Your daughter will take her cues from you - especially if the two of you are extraordinarily close & attached to one another. If she sees you comforatble around your husband, if she sees the two of you being affectionate & genuinely warm & friendly with one another, she will grow more comfortable, warm and friendly with her daddy. If you are still harboring unspoken anger, resentment, distrust towards him, she will pick this up and act it out. The main thing is, they have to forge their own relationship, and you have to give them the chance to
do that - with you NOT present. She may cry at first or reject him for awhile, but if he tries his best not to take it too personally, and doesn't give up, they will find their way. Have him read up on what's going on developmentally for 8 month olds, plenty of good books out there (stuff on the internet) and games and activities/toys babies this age LOVE. Let them create their own silly, fun routines with one another, and let her see you enjoying his company as well. Let her experience the 3 of you having fun together, and with her brother, too.
As a mom and a therapist, I assure you, as the two of you resolve your own issues between one another, you will see a shift in your daughter's behavior.
Good luck!
D.