I mean - your first post was that he was in the backyard and it seemed weird.
Then - you added that he was kind of near your daughters window.
Now you're saying he was looking directly into your daughter's window while she was in there with the light on.
Honestly - I'm not saying you're making things up - that's not what I'm trying to say at all. But depending on which description a person reads, it's no wonder that the responses to this thread you started have been so mixed. Some folks think the dude in your backyard might have a valid reason. I promise you that no one thinks a dude looking directly into your daughter's bedroom while she's in there is OK or normal.