When Regina finds her true love in a tavern, Captain Killian Jones, the two villains find love with each other. Regina is young, only 8 years older than Snow White, who's father she was supposed to marry. She doesn't marry him, and ends up with Killian, however, since she was still born royal, she is a Queen herself, and still competing with Snow White.
Snow and Charming marry, as usual, Regina and Snow each have a daughter, they are the same age, Emma and Molly, and the girls are forbidden by their parents to be friends. The girls are both gifted with magic, since they are both products of true love.