I think that remorse (or lack thereof) is dependent on a person's personality. For instance, my ex husband has been diagnosed with several personality disorders that limit the ability to feel empathy and remorse. He has feelings of remorse but they mainly have to do with himself and not the harm that he caused me...as in he is sorry for what he did to me because now HE doesn't have the relationship that he wants.
When someone is in active addiction I think it's difficult to care about much else than themselves and the substances.
You are doing the right thing by taking care of yourself and your daughter. I know that it hurts but it helps me to remember not to take it personally.
Gentle hugs.