Well, if you think you might be able to finish the story, I'd rather not ask for a backup. If you want to take a couple of days and see if you can get something written, that's fine. Just let me know if you can't manage it, and then I'll ask for a backup.

If it's any consolation, the person you're writing for is late too, and about half of the participants have had to post their story in parts, including yours truly, so....