Well I brought up this subject with her last night and it resulted in a big argument.
Though it finally resulted in her explaining to me why this is an issue.
The gist if it was that she felt that analysing enough to provide verbal feedback ruined the moment because you have to think too much and you can't simply enjoy. Also, she hated the idea that she might be 'graded' or asked to 'grade' while we get it on together because it would make her feel self conscious and un-sexy. (Me, I dissect and analyse everything because that is what I do and who I am.)
I think I patched it up though: I suggested that maybe 1/5th or less of the time we concentrate specifically on feedback and self-improvement and the rest of the time we just jump on each other and do what feels good. We agreed on this. But damn, it was a stressful night.