"No"

 

A Knight can Suggest an activity either by speech or a physical action.

This Wish makes it clear that she not only doesn't want the activity to happen at that time, but that to prevent her feeling pestered she doesn't want him to suggest the same activity again that Session.

Of course what happens later is still up to her, so she may surprise him by having the activity happen later that Session even though she had said "No" when he had suggested it.