Assault & Battery: Worried About A False Assault Claim

I live in Michigan and recently found this forum when looking up information to help me out with a possible legal situation.

I have a few questions, so let me explain the situation first.

We'll call the gal I'm having the issue with "Ms. M". Ms. M is 44, lives with her parents, is a manic depressive, on drugs (crack), and is currently upset with me.

My mom and her best friend planned a party one Friday evening and invited me over. Ms. M, crashed the party drunk asking to borrow money from everyone. After being told no by several people, Ms. M started helping herself to the food and spirits that were bought for the party. Several people at the party got irritated by her behavior and left. My mom pulled me to the side and said that her money out of her purse was missing. We started looking for the money while Ms. M called a known drug dealer and invited him to the party. When he arrived, my moms bestfriend asked her why she had invited him over and this is where the fun all started. Ms. M then began to get loud and rude stumbling all over the place. I then pulled her to the side and asked her to leave when she started on a drunk rant about how she hasn't done anything wrong and that everyone was picking on her. I got upset and yelled at her to "pull herself together and get out because she was ruining the party". Ms. M then attempted to push me but I slapped her arms away and by her being drunk, she lost her composure and went flying into the wall. She got up screaming that she was going to press assault charges on me and finally left.

The next day she called around telling people how she called the police in the city I live in and they directed her to the police of the city where the "incident" happend. She keeps calling my cell phone and making threats to get even. The only thing she suffered from was embarassment from falling, so what she plans on getting even about is beyond me.

She has a history of black mailing drug dealers when she can't get what she wants by calling the police, which is why I don't doubt that she is phsyco enough to follow thru with a report against me.

My questions:

1.If she does file an assualt type report, its false...what are my options?

2. I'm also concerned about how damaging such a report could be to my career or credit...Would a report of the like show up on my record?

I don't have a criminal record of any kind, am employed full time, go to school part time, and raising a family. I've never been in any type of physical altercation, not even thru school, and would hate for her to be successful in making a false report that could possibly interupt the things I'm trying to accomplish.

3. Are there any laws to protect me from this crazy woman?