First, welcome to Pet Talk.

If I were you, I would very nicely and sweetly, offer to pay for and transport the dog and one owner to a training class in their neighborhood. It might speed up the process and give the dog a better start. Usually the trainers train the people more than the dogs, thus an owner must be there too! It might just ease your mind a bit, knowing the dog has been tested, if you will, with a trainer. I would try to find one with lots of experience with mature dogs, not just puppies, as many are....i.e. pet stores etc.

Keep us posted.

I would keep an eye on ANY dog around children. When I take Prue to my friend's child daycare center, I keep her leashed and DOWN. The kids love to pet her and it is a good time to teach the children where they can pet and NOT. Prue tolerates it nicely, but she knows she is leashed and I am the one calling the shots. If she was off leash, I think she would be knocking the kids over by licking their faces and hands! She loves children but can sometimes get overly excited. So I leash her. It works for Prue.

Again, keep us posted.

I bet all will be fine.

Again, training and education about dogs will improve your opinion of the pupster, I am sure.