Well, it's not surprising it might be a completely made up address.
I wouldn't want to risk spooking her too much either.
Any idea what law enforcement agency to report it to?
No, I can't tell who would cover that area but I'll check at work tomorrow. My niece is going to email her and see if she gets a reply. And I'm thinking that on Momdy our computer person at work can tell me something about how to find out information from the ISP stuff.