You’re too old for this game, even though you’re too young for the ugly words your friends are hissing about you behind your back. You’d rather be anywhere else right now than crowded into Jessica McCall’s bathroom, but your parents are friends with hers. They said you had to go to this sleepover, and so here you are.  The air is heavy with Noxema and hairspray, and the counter is littered with half-empty cherry lip gloss tubes, eye shadow experiments, and dollar store nail polish. Just like you and every other giggling preteen crowded in front of the mirror, Jessica…