I'm sorry to hear about your situation with your daughter and your dog! Sometimes,with pound dogs and rescues, it really is a toss of the coin how that animal integrates with the family, especially if that animals' past is unknown or sketchy.
When I went to buy my first Hudson in 2000, we made a day of it and took the family to north Texas to pick it up. The seller had a large Boxer that was not a "people dog", so he kept it in the fenced backyard while we looked at the car and did business. We went inside the house, and for whatever reason, he let the dog IN! Almost immediately, the dog made a beeline for my younger son (six at the time) and bit him on the cheek. I grabbed the dog and tossed him out the back door, and kicked the **** out of him on the way out! The owner was upset at his dog, and I was very upset with him AND the dog! So, we all went to the ER, where my son got five stitches. Fortunately, I intercepted the dog before he could do any serious damage to my son.
Long story short, the seller paid for all of the ER time and trouble, plus his insurance paid out a decent sum, too. My son had some fear of large dogs for a very short time, and got over that pretty quickly. The seller gave that Boxer to his ex-wife...don't know what to infer from that. Anyway, he and I ended up being pretty good friends after that. And his wife ended up putting that Boxer down, in the end. It was not a good dog.