It's difficult, man. It will probably make you happier if you could just forget about it, but brains don't work that way. Plus some people just seem to be way better at it than others.
A mildly traumatic thing happened in my workplace. I have plenty of functional days, but other days things return to my brain without my inviting them and it makes it more difficult to function. Sometimes I get transported back into time like I'm there.
One thing I read about is the concept of mental "time traveling". When we remember these things, it's like we are literally back in that very moment. But that is not what is happening right at this very moment. You are "safe". You are not back in time being harmed right now.
Is it wise to not trust her anymore if she has proven herself to be untrustworthy? Absolutely.
But in order to free yourself better, you have to first notice that you are time traveling. Then look at things in your environment. Not her, but try to take in all of the sensory input around you. Remind yourself that you are here, not there. Recognize that the only time that exists is right now. Even one second in the past no longer exists and even one second in the future doesn't exist yet. Work with what is around you now.
Idk if that is at all helpful, just something that I have read about lately. Way fucking easier said than done because I still struggle.
Wishing you well.
I deliberately use the print as image feature if I don't want someone to be able to select text or search the document (like if I'm sending something with sensitive info as an attachment to an email). Most of the time, I have that option disabled so the document can be searchable and text can be copied from it.