She can feel the tidal sensation building inside of her with every stroke and flick of his fingers working deftly against her. This too cleaves through the fog in her mind because being this apt with his fingerwork means practice, doing it over and over again, and that means she's behind because Hermione has only had sex twice before with Ron. And each time it's been halfhearted and clearly inadequate. Each time it has been rushed because war meant fumbling in the dark when everyone else was asleep and then grimacing during it because convenience didn't add up to coordination or even chemistry. 