I understand why you would think that if you are involved with someone..well basically you should be able to read them well. The fact is though she's a different type of person than you are...and she's making the mistake of making assumptions about you too...based on her past experiences.
My H used to assume I would react the same way to different things...as women from his past would. So, he'd make that assumption then immediately jump to the defensive and make things worse. I'd be sitting there thinking WTF! Knowing...if he'd given me the opportunity he'd have seen I wasn't going to react in at all the same fashion as he expected.
I suspect...you are both doing this. When this happens you set each other up to where well...you do begin to behave as the other expects you will.
That's why I say clarify. If she says no...then ask her, "exactly what are you saying no to? You were enjoying what I was doing." I'm still the one who clarifies things in my M, my H still hasn't learned to do that, but we both benefit from it.
