How did Jezebel die?

Answer: Thrown from a window

Jehu shouted 'Throw her down!' and the eunuchs at the window threw Jezebel down; horses trampled her.

“He looked up at the window and called out, “Who is on my side? Who?” And two or three eunuchs looked down at him. “Throw her down!” yelled Jehu. So they threw her down, and her blood splattered on the wall and on the horses as they trampled her underfoot.”— 2 Kings 9:32-33 (BSB)