Mentally challenged -- fiction
When people hear the name Ann M. Martin, they naturally think of her wildly popular Baby-sitters Club series. What was supposed to be just a four-book set turned into a 130-book saga, not counting the 120-book series for younger readers, Baby-sitters' Club Little Sisters and other spin-offs. In recent years, she's added other series about children and teens experiencing challenging times, but she will always be known for The Baby-Sitters Club books, several of which are now graphic novels.
Why did these books about four very different middle-school friends take off on the bestseller lists? The secret must lie with Ann's gift for remembering her feelings throughout childhood and young adulthood. She was a babysitter herself, and a lot of the things that she writes happened to the babysitters on the job happened to her or her friends. She also remembers what it feels like to lose a parent, have an annoying little sister, and deal with family secrets.