It was both the only option for her, since her hands were being pinned, and her preferred option - since she knew he loved it, and she didn't have to worry about her legs getting tired wrapping around him like that, for a while. Plus ordinarily she'd still be able to use her hands and arms to wrap around him or touch him.

Also with her, she was never going to get rid of that shyness, so he didn't have to worry about her being -too- bold in bed. Occasionally of course, she felt bold enough to take the lead though. In any case, she hadn't expected him to target her chest first, let alone pull her up like that, so she let out a soft noise that was somewhere between a surprised squeal and a whimper as her body shudderd against his, "Nng-y.. you do?" she managed to get out, even as she instinctively pushed further against him for more contact with his body.