Can anything be done about malicious criminal charges constantly being filed?

In the last 2 years my husbands ex girlfriend has charged him with ault and a couple other charges that he was found not guilty of (That cost $17,000). Three months after that during a "child swap" I was the one dropping off my step daughter but it was not her mother there to pick her up it was her aunt that I had never met the woman opened my car door and pulled the child out. I told her she needed her medicine she flipped me off so I tossed the medicine bottle out the car door underhanded and it landed on the ground. This all happened in the Jail parking lot. I went straight in and filed a police report and they basically said there was nothing they could do, 30 days later the police were at my door to arrest me for battery. (That cost me $2,000) and they dropped it if I would tell the aunt I was sorry for tossing the pill bottle out the window. About 3 months after that was dropped the ex, during a child exchange got into my car over my newborn son , I was in a big SUV I told her repeatedly to get out she would not I looked and she was over top of him with her hands in his car seat. ( She had been told numerous times to stay away from him) I jumped out of the car still rather big and uncoordinated at 2 months postpartum, and accidentally tripped and hit the car door which in turn hit her legs between my runner boards and the door. This woman still did not get out of my car she looked at my husband and said "he is so beautiful" then she called the cops. 30 days later charges were filed against me for Battery and disorderly conduct. Shortly after she filed these charges on me she was arrested for stealing a script pad and filling several for narcotics. She got nothing but a slap on the wrist, this was not her first time. Can I do anything about this police dept filing everything possible on me and pushing it to the Limit because she wants them to?