8 Month Pit Bull Plays Too Rough?

My APBT is currently 8 months old and I have had her since she was 6 weeks old. During this time we have moved three times. Initially, we lived in a situation where she got to play with a few different dogs and see various people. While playing with these animals, she would play normally and occasionally act dominant but never aggressively or too rough. She would not jump or nip at people except my 10 year old nephew who would play roughly with her.

Soon after this, we moved in with my parents. My parents spoiled her by not enforcing rules and letting her play roughly with them. After discussing this with them, they stopped for the most part but it seemed the damage was done because she now thought it was okay to jump on people and nip at them.

Since then, we have moved into a complex with a roommate. The complex contains many people and animals. She will listen to me when we are alone with only the occasional challenge. However, when we are walking and she sees a person or another dog, she gets really excited, stops listening to me, and tries to pull to get to the person/dog. On the occasions that she does meet someone new (or old for that matter) she will jump on them and nip at them. She does not do this with me, but she does it with everyone else! It makes me nervous that she may hurt someone because she does not realize she is being so rough. She also now plays too roughly with the dogs she was initially socialized around. I just want her to act more calm around everyone else like she does with me. Any advice?

By Mary Katherine C.