The Seventeen Secrets of the Karma Club (Fiction) by Karen Mccombie

Kezzy and Nell have their own club, a secret society for acts of kindness. It’s their mission to cheer people up with golden moments and sparkly surprises, but when Kezzy’s mum admits a not-very-golden secret of her own, the Karma Club’s best intentions start going weirdly wrong. It’s starting to look as if no good deed goes unpunished.