I finally got my parents to pick up the phone. They've heard from our London friends and everyone seems to be safe. One family checked in directly to say they were okay, and the matriarch of the other sent out an e-mail to say she had a new e-mail address, and said e-mail noticeably did not say that anyone died. So we're pretty certain that all is well with our friends.
I am a very happy Pony.
11 July, This Just In: I heard from Annabel, who I had e-mailed. She's fine. Everything is officially okay now.