Mommy? What's rape?

I wanted to share a rather interesting experience that i had the other day. So i work as a nanny for a family that recently lost their mother to cancer. It is a tough job, rather sad from time to to time. But the nice part is that they have a network of support. Namely, from their neighbors. The neighbors watch the children often. Last week, in return they asked if their children could spend some time at my boss's house. They have two young girls, the youngest is 6. She is totally adorable, very sweet and tiny tiny tiny. She was sitting next to me at my desk, she like to do her work with me. It was at this time that she turned to me, looked up at me with these adorable little eyes and asked what "rape" meant... i had no words.