First of all, hugs to you. I’m sorry you’ve had a terrible, traumatic experience. Sending more hugs. The UCs do have counseling services, so make sure you start to set up your support system when you get there.
Regarding your question: The admissions committees have seen a number of private issues come through their applications.
The person whom I know, who is an admissions committee member at our local UC, maintains her professionalism and confidentiality. When we talk about work, she mentions how some students have described traumatic and criminal experiences in their apps but she has never indicated anything regarding what those are.
I would assume that all of the UC committees maintain high standards of confidentiality unless a student continues to describe being harmed or abused. Then, I would think authorities would be contacted to PROTECT the student because they are obligated by law, to report abusive situations.