Susan gave permission for her daughter to stay overnight in the home of complete strangers.
Later, she went over there with the husband and some brownies to see if she could get rid of a queasy feeling that she had.

Susan liked the strangers and it wasn't just because she was handed a plate of warm apple fritters topped with icecream faster than she was able to calculate how much fat & sugar they might have.

There was much lively conversation and the strangers had a ballsy romantic backstory that Susan found appealing.
It was a good first date and Susan would like to see them again.