I surveyed my T like a hawk for any sign of voyeuristic interest when talking about abuse and sexuality, so, yes, I can relate.

I'm 100% sure the paranoia was projection in my case. Couldn't say in your case--did she do/say anything in particular that struck you as 'too' interested?

I'd think encouragement to speak, letting you know that the topic is allowed, would be fine, but prying for details or mirroring with explicit language would creep me out.