Not unheard of in WBB either. Andy Landers hired Brenda Hill, mother of future All-American Tasha Humphrey, as an assistant coach before recruiting Humphrey.
From a 2004 Article:
The Georgia coach raised plenty of eyebrows when he hired Hill as an assistant in 2002, giving the Lady Bulldogs a decided advantage when it came time for Humphrey to decide on a college. Hill's only previous coaching experience was six years as an assistant at Gainesville High School, where her daughter was the star player.
After watching Humphrey play, Landers probably figured he could handle a little heat for his hiring decision.
Hill then departed a few years later to return to coaching High School ball.
I think Orangutan has it right to the extent the job can't be phony. NCAA figures it's OK if the parent gives fair value in return for her pay. That's considered an even exchange, not a kickback.