WTF is scaring my husker?

I just came back from taking my husky out to go potty and there was a girl just hanging out in front of the laundry room. Well, my dog saw her and stopped, fixed on her momentarily, and then starts backing up and whining and trying to go back inside the apartment. She hadn't even gone piss yet!

The is the second time this week she's done this... The first time was the other night in a different part of the complex and there was absolutely no one or nothing around. She just started getting freaked out and wanted to get away from... Something.

I've never seen her act like this. She's usually quite fearless.