I've been married to my wife for a few years and we had a boy. Krista, our latest babysitter was a cute sixteen year-old girl from down the street. She lived about four or five blocks away.
She took to coming to our house after school to play with our son, and to help my wife. When I would get home from work, usually at about 5PM, Krista would go home to eat dinner.
We didn't use Krista too often for formal baby sitting, since we didn't have a lot of money, and couldn't go out too often. She was a god-send on those rare occasions when we did go out.
After a couple of weeks of dropping in, I became aware that Krista didn't rush out when I got home, as she had at first, and my wife did ask her to stay to dinner several times. Even then, she was great, as she helped with the dishes, while I went in and played with the baby.