Henry is a kind soul. He wants to help the Beast, but he's not sure what is wrong.
If the game gives you a hint for this, I didn't find it. It's a backwards puzzle. You have to find the object to know what it is used for. But, what would likely freak out a Mummy Beast the most?
The Beast wants her baby back.
Have you explored all of the previous areas?
The Baby Beast is in Ye Olde Coocoo.
Take the Baby Beast back to the Beast.