Didn't realize Betsy to be a whale. I like the way you made on how to get the key. It was fun and creative way of using the Scaling band.
I've did run into a bug, when I entered the whale's insides, I scaled down and moved into the smaller pipe or intestine, then I scaled back to the default size and it glitched and made me go out the map.
Just pointing this in case you might want to fix this in future if you continue to work on it.
Good game !