Akc Reverse Brindle Female Boxer in Binghamton, New York

I am looking for a home for Onyx. Shes a very nice girl who gets along well with others and just needs someone with time to give her love and attention. Her and my other female grew up together and now for some reason my other female has become very dominate and they have gotten into a few scuffles. I would like to find a home for her since she is the more submissive female and my other female is due to have puppies. I am worried that if I dont rehome her shes going to get hurt.. She is a reverse female looks almost black. She had one litter of puppies in June and was a excellant mother who actually raised my other females puppies due to getting mastitis.