Had a Rottweiler female in the house before my daughter was born. They were the best of friends for years, with my daughter sleeping with her head on the Rotties tummy. When the female passed we got a male. Worst mistake we ever made. Had to rehome him after 9 months. It all depends on the nature of the specific dog. it sounds like mom is a family dog so I don't think you will have problems, but watch carefully in the beginning.

I have had Rottweilers for years, and am convinced that it is all in how you raise your dog. I have also known Labradors (belonging to other people) who were agressive towards children, even though they have a reputation as good family dogs. Rottweilers are low pain, low fear dogs - in other words, it takes a lot to make a Rottweiler react to pain such as ear or tail pulling. I grew up with an 80kg DobermannXRottweiler that taught us to walk by offering us his ears as hand-holds and then walking slowly. Both my previous Rotties have been fantastic with children (my last Rottie was a 60kg male), but I raised them from the beginning to believe that my word is law and if I want something that they want, they must surrender it immediately. I never took something away from them without offering them something else in return, such as a slice of bread or a doggie treat, so they were always more than willing to give up their treasures. Both were socialised extensively with children and other dogs as tiny puppies. I very seldom had to raise my voice to them in reprimand (they're not deaf, after all) and they were always well-mannered in public, but were treated with both affection and discipline. A big, strong, potentially aggressive dog can not be kept without training, so my advice, if you don't have experience training such a dog, is to attend training classes or join a dog training club. And the children need to be trained as to how to treat the dog. It is very rewarding.