Ok...you don't get it. She can't say "I'd Love to" because there is something conditioned within her that causes that knee-jerk reaction to say "no"...it's a conditioned response. Her giving him that information was a breakthrough for her. She, I believe, is on the path to figuring out why she does what she does (or doesn't do.)
It appears to me that you are concentrating on what she said in the negative "no" rather than hearing what she really did say "if you'd just keep going I'd get in the mood"....that was important info for him. That was her saying in a sense "that I need you to do that in order for me to get in the mood, so just don't ask for permission, go ahead, if I really don't want to have sex I'll tell you."
If you aren't able to see the positive to this CeMar I believe it's because you don't want to; you concentrate too much on your perception of what sexuality should be and what it should be for your W. She opened up and gave him some insight to how she works and I think that's great!
You still didn't answer my question though...."how would you react if your W said that to you?" What would you do with that piece of info? Because it is very possible your W gives you a "conditioned response". You've stated before that you could have more sex than you do...what's to say your W doesn't also give you a conditioned response?
