It’s after four a.m. when Amy exhales heavily and finally gives up on the idea of getting back to sleep. She dropped off like a rock the moment her head touched the pillow, thanks to a cap, but the caplet didn’t hold. She drifted in and out of sleep for a while, but has spent the last hour just lying here, staring into the dark. It’s one of those times when she’s glad to be single. No one to disturb.