"I've... got my reasons," Cindy murmurs evasively, thinking much as she trusts Heather to do this for her, the less she knows the better, really. "So, you will, right?"
"Sure," Heather shrugs, "It's no problem for me. But I've got a lot of questions... and the fact that you're not telling me makes this sound even weirder, frankly."
"Yeah, well, you don't need to know," Cindy frowns, before realising this isn't quite the way to persuade someone to do her this huge favour. "Look," she attempts to lighten up, "I'll owe you one, okay? A big one."
"That sounds promising," Heather grins. "Sure. Sure thing. But next time I want something weird buying for me, you better believe you're gonna be my bitch."
Cindy frowns again, but she's getting what she wants, so she hands over some money and keeps her mouth shut this time.
Heather must have gone direct to the store after school, because only half an hour after she gets home, there's a sharp rap at Cindy's window, and when she opens it a carrier bag is standing there on the ledge. No sign of Hannah, who's melted away like a secret agent making a drop, but in the bag a packet of fourteen generic brand adult diapers in Cindy's size, plus a receipt and her change. Cindy's heart starts pounding, as she lifts her new treasure out of the bag, hardly able to believe this could have worked so easily.