My spouse told me she needs proof

Tw: csa, PTSD, mention of assault

My mom remarried when I was 4. Her husband sexually abused me until I left at age 20 (I am 29f now). My spouse has been *instrumental* in my realizing I was abused, leaving, and getting help. She is very aware I repressed everything until I was safely out. I only started consciously remembering and addressing the abuse 7-8 years ago.

I was talking to her today about a memory from when I was around 19 - probably during the first summer she and I were dating, when I lived at home still and she was at her childhood home 80 miles away for the summer. (We had talked about this incident and it's timing before - this particular memory resurfaced about a year ago). Today, she realized that meant we were likely texting that day, and I hadn't told her right when it had happened. Now, she told me she is questioning whether it actually happened, whether any of it is real, and said I LET him touch me while we were together.

This is completely out of the blue. I have questioned my own memories before, and she has always backed me up and believed me. Always.

I don't know how to look at her right now, let alone trust her.

Edit/update: she doesn't believe I could have dissociated enough to forget/not acknowledge what happened. So effectively, she's convinced I lied by omission when I didn't say anything *that day*. And wants "proof" that I wasn't consciously aware of it.

2-day later update: She apologized yesterday afternoon, said all the things I had wanted to hear, but it felt empty. I told her it was over last night. Things got ugly. She doubled and tripled down, and still tried to blame me. I have a week's worth of clothes, my car, and most of my credit cards. I'm living with my sister in law for the time being.