She goes utterly still for a moment, and then she makes one of the most incredible sounds Sherlock's ever heard as the orgasm shudders through her whole body. Molly is beautiful and vulnerable and completely undone by how he's devoted his undivided attention to her. He guides her through it, watches and feels every cresting wave of it, and when the hard pulsing against his tongue and squeezing his fingers begins to slow so do his movements, easing her back down.