[Utah Girl]

Here is the source that says where the Smarts will donate the reward money (if Mary Katherine is awarded a portion of it). From the Deseret News:
" The Smart family says Mary Katherine was nominated by an outside party and if she should win the reward, they would donate it to The National Center for Missing and Exploited Children." Nominations in for Smart reward.

[Utah Girl]

And here is the source where the family spokesman, Chris Thomas, says the family will not profit from the making of a movie and/or book from Elizabeth's abduction. Smart Family Fields Movie Offers

Chris Thomas/Smart Family Spokesperson:

This is something they never really thought about. The euphoria of having Elizabeth back has been amazing, and then to all of the sudden hear unauthorized versions of movies and books are possibly being done, they're really faced with - do you let somebody else tell the story or do you have some control over it?"

Industry experts say Elizabeth Smart's miraculous return right now is one of the hottest stories, and potential movie scripts in Hollywood. And a deal could earn anywhere from a half million, to several million dollars.

Thomas says if the Smart's do decide to endorse a project...proceeds will go toward Elizabeth's recovery -- and the rescue of other missing children.

Chris Thomas: "The family's not looking to profit on this by any means. If some money came in it would go toward taking care of Elizabeth...obviously there's a long road ahead with a number of professionals working with her...most likely a trust would be set up that would benefit her or possibly to on to benefit The National Center for Missing and Exploited Children."