Yes she can be a bit feisty but I for one liked the way she fought her corner when others have ran away from Nora in the past. I think of all of them, Jess, who I really like, is showing the least maturity by picking fault with Nicole for breathing....
As for the sex, I've watched those sessions very closely, as you'd expect for obvious reasons and IMHO Miguel knows how to explore her body because Nicole knows what she likes and wants...