Maybe this is one of those times where you could share your feelings with her and set a boundary with respect to her treatment of you.
"That thing in the laundry room last night was pretty weird. I was very hurt when you came in and challenged me -- I felt I was being attacked and punished for no reason. That kind of treatment is really not OK with me. Instead, please tell me directly if you would like me to stop doing something.
It was very confusing. I also felt more hurt and fear because I began to think that you were scared I would find some OM stuff. That idea makes me feel used, disrespected, and treated unfairly.
Altogether, I feel very sad about the whole thing, I just don't feel good at all.
I hope my sharing directly like this helps us both..."
