Firstly on the topic of your education, life experiences is a major asset in regards to being a peer advisor on these forums. Hence it would be a real shame to throw away a near completed career due to one of those experiences albeit a traumatic one.
"My family has fallen apart". A sad headline and at your age your backbone of your life has been your family. When news breaks from a few sources of child abuse by family members or friends (and supporters of their actions) it would be crushing because trust has been broken. All I can say further is what I would do in your situation and suggest a alternative focus for the future.
I'd gather all information and if I was convinced the actions of these people did occur, I'd have to be brave and repaint my future on how my family will be. If you strive for anything in life you must be committed to reap the harvest of your effort. Sure, it would be a long term solution but it would protect you own family that you have declared "family" ...trusted blood relatives and new family friends.
Eg. I chose to become estranged from my mother that was disruptive, manipulative and cruel even ruining my 1st wedding and trying to ruin the 2nd. It was heart breaking. Following that decision I knew of a family friend that was loving and trustworthy. She has become my new "mother figure" and enjoys my poetry I send to her. They have a son they dont see as he entered the crime world many years ago.
I also have a niece that is a religious cult leader. Her mother, my sister cant have a relationship with her for obvious reasons. However my daughter and my sisters 2 adult daughters have bonded to become a close knit family that wont tolerate criticism etc. Our high quality little family has grown to include many cousins and we are truly happy we eradicated the destructive side.
To sum up, you can carve out a real family and the earlier the better. Sure, listen to those that carry out their own right to choose what family is, their communication with their parents etc that you have pushed out, listen and observe and keep making your own choices. If you feel your mother is regretful then you make the choice if you want her in your life or keep building your trusted family. This is in a metaphor below