Hermione thought it was rather selfish of her to encourage him to continue because she was so very happy with the way that he was making her feel. She felt tight, and she felt every bit that she widened for him. Although it was a bit uncomfortable at first, she easily found enjoyment in it. How could she not? This was the most intimate way two people could be with each other and she chose to believe that the reason they both had waited this long was because they hadn't found the right person yet. It was certainly the case with her.
She lowered her shoulders down to the mattress and lay her head down on the pillow, raising her arse just a bit higher. She just wanted to feel, and he made her feel amazing. Hermione was so unbelievably happy that she was fairly certain this was the memory she'd use to cast a Patronus if the issue ever arose. A side thought, if there ever was one. "Merlin, yes," Hermione groaned in reply, wiggling her arse a little in return. "I need you," she moaned, adding a quiet, "Please, Sir," afterward, almost a second thought. It wasn't the least bit out of the ordinary for them, because she called him 'Sir' all the time at work.