Mystery Monday: Her Voyage, Part II

My son just called me, though it's 2 a.m.,
To tell me of a message he received
At an address kept secret (All of them
Are such, but this is routed. I believe
Through -- I don't really understand this stuff, it's just
No one should have it). "Really, I know where
Aunt Kris has gone," he told me. "Do you trust
Whoever sent this?" I asked. "I don't care;
A lead's a lead." "Good point. So what's your news?"
"Afghanistan." "You're nuts. Why would she be--"
"That's not a place," my son said. "Look, we use
A code. It means she really isn't free--"
"A code?" "We made it up when I was small,
Just for some fun--" then something killed the call!