Acehood,
I didn't read all of the posts so if I'm repeating something already said, I'm sorry. My first thought after reading your post is to tell you that your Mom is not angry with you, she is angry at herself because she has not been able to do what you are doing, hopefully someday she will.
Secondly, you are a Mother now and you have the responsibility to ensure that your child is sheltered from this type of life and to nurture her and care for her. Your Husband is right, you should limit any contact with your Mother for both yourself and your child's sake. Make it clear to your Mom why you are doing this, it may be the push she needs to clean up her own act.
Make your sobriety priority one in your life, you have two lives depending on it now.
Wishing you miles of smiles,
John