To secure the Spanish alliance and her own sons' futures, Lizzie realizes she must allow the execution of her brother and her cousin, Teddy Plantagenet.

The series finale of The White Princess (1x08, "Old Curses") marks the definitive moment where Lizzie (Elizabeth of York) completes her transformation from a defiant York rebel into a ruthless Tudor Queen.

Unlike Teddy, who is terrified, Richard faces his death with dignity. He tells Lizzie not to close her eyes, forcing her to witness the consequence of her choice. The Truth About the Princes in the Tower