Chore Whore by Heather Howard (2005, Hardcover)

After working thanklessly for a dozen celebrities at a time for nearly twenty years, Corki Brown has finally reached her breaking point. She's tired of finding high-end, supersize condoms on her days off. Tired of handling extortion deals and washing groupies' dirty underwear. Tired of whipping up intimate dinners (on no notice, of course) for ten stars at a time who all have their own strict personal diets.

For Corki, mundane tasks have suddenly morphed into the surreal, and when her ten-year-old-son starts exhibiting some very strange habits, the need for change becomes clear. Using her wits and talents learned from years of mothering self-centered stars, Corki devises a plan of escape -- to save herself, her family, and, ultimately, her sanity.