
The person who knows her lines best, and shich stud dog would give you the best result, should be her breeder. If you get no joy there, then contact one of the Rottweiler clubs listed at the bottom of the
Breed Standard and ask for advice.
Also your bitch will have to have passed all the breed-relevant health checks (hip-scoring etc) before reputable stud owners will alllow you to use their dog, and remember that the best dog is invariably a long way away!