I have two good options that you might consider. :]
001; Find one of your old necklaces, rings, bracelets or something similar that you don't want anymore, and preferably your daughter hasn't paid attention to. Place that instead and tell her that "The tooth fairy told me personally that she's proud of you being so grown up, and has left you something special this year!" Hopefully, she'll be amazed (and look after it ;) )
002; Write her a letter on your computer, or by hand from the tooth fairy herself, saying something like... "Dear ____,
I'm awfully sorry, but there are so many little children loosing their teeth tonight, I've run out of money to leave you. I thought you looked like a pretty mature young girl, and hoped you wouldn't mind waiting untill tommorow night!"
Along those lines, and then give her a coin the next night, maybe with a small sweet or something ?
Hope it helped a little? :) x