system
apprehensive: I was unsure about letting my son go to a sleepover since we didn't know the family very well.  It was hard to decide what to do.
human
My son was invited for a sleepover but we don't know the host family very well.
gpt
Did you decline? I would not feel very comfortable until i got to know the family. 
human
Yes, and it was hard to decide because my son really wanted to go.  But you can't just trust anybody these days.
gpt
I agree, you made the right choice. And it gives you time to get to know the hosts before a future sleepover!