For some children, finding out that the tooth fairy isn't real is the final straw.
8 Blogs for 8 Nights of Hanukkah Blog #1: Oil and the Secret of the Jew
You shall make no covenant with them and their gods. They shall not remain in your land, lest they cause you to sin against Me; for you will serve their gods - and it will prove a snare to you.
Make sure you are helping your partner get what they need.