Meanwhile, Hook had an idea to save some time.
He knew that Ursula didn't need to get her happy ending from an author because he was the one who deprived her of it.
Indeed, in the past he had taken away her singing voice, he was sure that it was possible again. By realizing this, he could prove to Maleficent and Cruella that they don't need an author to get their happy ending. Ursula promised to tell him their true intentions after that.
Hook succeeds thanks to Ursula's father, Poseidon, to give her back her voice.
Before heading off to join her father in the oceans, she told Hook that Rumplestiltskin was back after Belle's banishment and that all of this would include Emma. Rumple wanted to make Emma's heart black so that the Author will write a happy ending to the villains.
Emma told Regina about all of this. The latter explained to her that she had nothing more to fear because the page had been destroyed.
The author could no longer be released.