I have two mill pups who I adopted in 2007. To this day they remain wary of other people. One is better than the other. My son is a huge fear with both of them and he is here often.
I would hope your husband will be on board with Sadie's rehabilitation. It may take a lot longer than you might expect...could be less time. These pups know nothing of loving human contact. They have spent their lives being tortured by human beings.
Here are a some links you might want to read:
http://www.milldogrescue.org/From%20...et%20-1012.pdf Puppy Mills New Study Shows Dogs in Puppy Mills Suffer Long-lasting, Severe Psychological Harm