"I know," she said quietly, and she did, somehow. Lexi didn't really bother to ask herself why or how - there were far too many other interesting things happening - but the knowledge was there, intimate and from more than just a few hours' experience. "But try to still your brain, and concentrate on other areas," she grinned, crooking her fingers just so, as if to demonstrate that yes, there were things going on that Clara might enjoy paying attention to.