tbh
Ender dragon affect the End which is a universe
“I have said all this before and I will say it again. I hate you, Fin. I hate you, Mo. I hate you more than the last time I told you I hated you,” Grumpo began. “The ender dragon is the heart of this world. It beats in the center of the End, round and round in circles, steady as a pulse. Nothing works without ED. And since the beginning, humans have come questing after it. To find ED and kill it for no particular good reason other than that it is killable. Every time my poor doggo dies, another one must be born. That cycle was perfectly acceptable. A world must have a heart. The ender dragon vanishes, an egg appears in its place, and a new ender dragon rises. But something as powerful and ancient and loyal to the Great Chaos who is its master does not die without leaving…a wake. Let’s call it that. When a ship passes by at great speed, the sea churns and ripples after it as water is displaced and replaced again. That is what happens when the ender dragon dies. What is going to happen in about…oh, I would wager ten to fifteen minutes, give or take. A great wake pulses out from its body. It travels through the End like the tide. It touches everything and everyone. And it makes them forget. The world resets. What came before is gone. There is only the now.” (Chapter 21 from The End novel)
Maybe just give her key?