From the NYT:
Ms. Hinton said she was a tomboy, happiest at her grandmother's farm, where her aunt had a horse. She longed for her own horse, and escaped into reading and writing books. (She wrote two unpublished books before "The Outsiders.") "When I was writing she'd come into my room, grab my hair and throw me in front of the TV," Ms. Hinton said of her mother. "She'd say, 'You're part of this family - now act like it.' I hate TV now."