"The flip side of your blithe "I'm not in loco parentis" is "it takes a village to raise a child." Do you watch a toddler step into a busy street, turn your back saying "it's not my child, let the parent watch out"?" Yes, because watching as a toddler gets hit by a bus is the exact moral equivilent of providing an 11-year-old with a book they are asking for. Come on.