Beckett's an early riser by nature. Years of surviving on little to no sleep have equipped her for this kind of thing.
It's the reason why she's the first to wake up, blinking sleep from her eyes before she even realizes where she is or what's going on. The hangover hits next - a headache that starts to pound in her head, and she rolls over onto her back with a groan, reaching up to pinch the bridge of her nose with one hand.
Her other is pinned, for some reason, and she pries it out from underneath - Bill?
She blinks a few more times, and slowly, the events of last night come back in a rush - of sweat, skin, sex. It still hangs in the air, on her body, around the three of them, and she mouths a quiet oh, my God before she staggers off to the bathroom to splash some water on her face.