Sam jumped when she threw back the curtains, metal hooks scraping against the rod with an unexpected screech. He'd forgotten about Ruby while burying himself in books that smelt of age and mildew.
She gazed out the window and into the darkness, arms crossed over her chest. Leaning forward slightly, Ruby exhaled on the glass, condensation forming under her breath, then turned her head in his direction without meeting his gaze.
"Getting chilly," she said, swiping a finger through the circle of fog. It got smaller as they both looked on in silence, and eventually disappeared from the cold glass.