My 82 Y.o. Mother Filed A Protection Order Against My Wife

My mother is suffering from either Normal Pressure Hydrocephalus a.k.a. Water on the Brain or Dementia. I only know this because I got multiple calls years ago about her condition, which is one of many reasons as to why I was prompted to move my family into her home on top of my mom practically begging us to. But she never got any further tests or treatments and refuses to see a doctor. Without any treatment her aggression, and paranoia grew and grew. She began to accuse us of plotting against her, trying to take her house. There was no reasoning with her in any way and it got to a point where the only thing she would say to us is "Get out of my house!"

One day I was taking my son to school and she started yelling at us unprovoked. My wife got involved and just told us to go, but after I walked out of the door I realized that I left my keys in the house. When I went back, the door was locked and I heard my wife scream "Don't you ever put your hands on me" as she comes to open the door. She tells me that my mom grabbed her arm and scratched her. I asked her if she'd call the police and she said no, because the last time the police were called (by my mother) they said that someone would be going to jail. I assumed they meant for abusing 911.

From this incident my mom filed a Domestic Violence Protection Order against my wife, making wild accusations that did not occur. However the sheriff still showed up to execute the order and remove my wife from the home.

We have a court hearing this week. I kind of know what to expect, but I have a few concerns.

1. Can the court determine anything at all pertaining to my children? Can they be taken from us based on my mother's testimony or through the judges discretion?

2. Can we provide evidence that will elude to my mother's paranoid delusions and incompetence (i.e. written statements from her doctor, recordings from other parties that have come into contact with her, recordings of her aggressive behavior)? Can this evidence get the court to make her see a doctor or remove the protection order?

3. As a witness, should I just recite a written statement? What can I really do to that will effect the judges decision?