[Judi W]

My bigger concern than the dog aggression (easy enough to limit the dog contact) is the people aggression. The owner knows her dog, has owned her since she was a baby, and has concern about her going after her son's friends. This being the case, let's not try to blame the instructor for "doing something to" the dog that caused the growling. I am glad you recognize the problem.

I would say for sure that you contact the trainer who has more experience with aggressive dogs, but even more that you contact your breeder. Few regular obedience instructors are going to be able to deal with this. As children get older, they have even more friends and more independence. More doors opening, more comings and goings that are not as momma monitored as a 6 year old's. Putting her up is not a long term solution in a family setting with growing children and if the aggression has not been addressed now, you can't start any sooner.