It was a new day. The sun shone brightly, pouring through the half-open window and landing on the sleeping faces of Annabel and Rose. The morning light painted the room in soft gold, and a cool breeze drifted in, carrying the smell of wet leaves and sunlight.

Annabel slowly opened her eyes. She blinked several times, confused for a moment about where she was. It took her a few seconds to realize she was lying in Rose’s bed.

“What on earth?” she murmured. Then memory returned—she had ...