"Roger “Zorro” Weitz has it pretty good, slumming off the scant profits from Hate You (Gonna Eat Cheese), a hit second only to Muskrat Love in the cornball-rich scene of 1976. But when a near-death experience leads him to a rare moment of introspection, Zorro decides to make a more tangible impact on the world. Believing “cool” is about all he has to offer, Zorro commits to helping his girlfriend Carla’s timid, obese daughter find the attitude and style that could bring about her own hip transformation… even if it means going behind Carla’s back to do it.
Eleven year old Dawn, a budding zoologist and certified genius, is puzzled by Zorro’s sudden attention but intrigued by his mention of a band mate’s long-abandoned gibbon. While she makes no progress whatsoever in “cool” she does learn a thing or two about blackmail, and before he knows it, Zorro is involved in a vaguely illegal rescue attempt, a slow-speed car chase and—most unexpected of all— he’s actually starting to care for the kid.
Readers of Tom Perrotta and Nick Hornby will enjoy Family, Genius, Species, a sort of reverse Pygmalion, replete with cheesy music references, a lesser ape, and a lot of heart. The book is 90,000 words and ready for perusal."
(I've left off the chummy and agent specific greeting and short bio as the crux of the matter is this middle part.)