When Bright Shimmer returned to her father's room with the book still safely under her wing, she discovered him in the same position as before, just sitting staring at the wall. She looked in the book to see how to undo hypnotism.
"Oftentimes it is required that the one seeking to release the hypnotized must use the same phrasing and pronunciation as the one who induced it. at other times a simple gesture, perhaps a snap of the talons or click of the beak, could suffice. With very strong cases it is required that the hypnotized be looking at or in possession of the focus point for the hypnosis"
Well that means she needed to find the correct words to undo the hypnotism, and maybe even find a specific object, and that would be very difficult indeed. Bright Shimer tried snapping her talons and clicking her beak but her stepmother must have set a word to it, and Bright Shimmer eventually had to give up and sneak away once again.