People will do this when they are afraid, especially children, especially females. They don't reason it out. Maybe they threatened to show it to their friends or parents, so they would have to face the embarrassment, stigma. Maybe they were afraid no one would believe them. This happens a lot. They're not stupid, lying, or whores, they are victims. It's disgusting and evil that you think this way. Probably damaged yourself from watching too much porn.