When a Father Faces Justice

My biological father has been arrested and extradited to my home town. He abandoned me by the age of 6 months old and never sent a single cent in my name. By the time the authorities pulled him over (while driving drunk, without a lincense, and with weed on his person), he owed $32,000 in my name alone. That is 18 uninterupted years of neglect and evading the authorities. At the time, my sister and I had already made arrangements to take in our 15 year old sister from our father because he was trying to save up enough money to go turn himself in to the authorities for this exact thing. He was living in a tent in his stepdaughter's back yard and letting his three kids just sort of stay where someone would take them in. It was bad enough for Brittney and I to step in and be the big sisters we know all-to-well how to be and get at least one of the children in a stable environment. We still have a sister over there, but she seems to be happy with her mother in a way that the one we took in can't be.
Up until this whole ordeal I was never given the truth about basically any part of their lives with my father. But I was the one to fly my sister in and drive her the 6 hours to Brittney's house so I got to hear everything. It was a hard experience for me and it unleashed some of the nastiest skeletons that existed in my own closet. It was a Pandora's Box sitting and talking with this sister just hearing about her life and the things she experienced and witnessed on a normal basis. It was just a very difficult thing to have to face.
Tomorrow is his arraignment. Tomorrow my aunt and grandmother are going to sit in the same room as him and watch him make his plea. It will be intense because my uncle who is my father's brother will also be there and it will be high tensions going around from all angles. It is not at all the kind of family reunion that anyone wishes for. The only redeeming factor involved for me is that I won't have to be there and I know my mother won't be there either. I don't want her to have to see him if she isn't ready. There are a lot of things that passed between them to have gotten married, had a baby, and divorced. I just want her protected in all this mess too because he is just not right in the head or the person she knew 25 years ago. How do you make sense of all this? I guess no one has an answer to that one...