“Ssh.” I rest my index finger on her plush mouth, silencing her. It’s dark inside, but light still shines through the small half-moon window that’s at the top of the door, enough to see Ruby’s eyes are wide as she stares up at me. “I want to test something.” Her delicate brows draw together. “What do you want to test?” My gaze drops to her lips. “To see if we’re truly compatible.”

