I am sorry for your difficult experiences.
Is it legal to record a conversation? It depends, the law is not totally set on this
Twelve states require, under most circumstances, the consent of all parties to a conversation. Those jurisdictions are California, Connecticut, Florida, Illinois, Maryland, Massachusetts, Michigan, Montana, Nevada, New Hampshire, Pennsylvania, and Washington. Be aware that you will sometimes hear these referred to inaccurately as “two-party consent” laws. If there are more than two people involved in the conversation, all must consent to the taping. The more accurate term is "all-party consent."
Because you were in private house, you had probably reasonable expectations of privacy and recording you without your consent is probably illegal.
It sounds like the "question behind the question" is can this tape be used to initiate legal proceedings if you don't want to press charges. I believe the answer is, "no."
your taped recording is hearsay evidence and depending on the alleged crime, you would probably need to press charges and would probably have to be a cooperative "witness." If you are not, I doubt the DA would/could do anything about this conversation.
It is also an invasion of your privacy.
Regarding the topic you were talking about, you should speak with a professional, a psychiatrist or psychologist about what happened if you have not done so already. You should have the free choice to decide what to do. And for free choice to operate, you have to have a choice. Talking with a professional will help you process what happened and decide what you want to do rather than choose out of exhaustion and wanting to move on.