Butterflies, Bullies and Bad, Bad Habits by Karen McCombie
Ally's worried about the family finances. Her big sister Linn has found herself a Saturday job, but Ally's too young to work ...unless she's a wee bit economical with the truth and braves the mad wig lady in the cardshop down the road. And talking of mad, what's going on with Rowan? If everyone's so broke, where does all her sparkly new stuff come from - the Shopping Fairy?