Solution: Write a note explaining to the tooth fairy what happened and I'm sure she will understand. I hear she is a very "wise" and forgiving woman. Ask your father.
Low and behold, the next morning there was a tooth-shaped note along with a heart-shaped origami dollar (she is also very crafty) from the tooth fairy.
The note read: Dear Isabella, congratulations on losing your first front tooth! And don't worry I will find it. Keep brushing, take care of your brother and listen to mommy. She is "very" wise woman.
Love-The Tooth Fairy