While she mainly is only important in the 2nd season of the show, I liked her a lot.
She’s the same Princess Aurora put under a sleeping spell by Maleficent. Though you don’t see her against her “nemesis” much at all.
Her beloved prince wakes her up to an enchanted forest realm affected by Regina’s curse. For whatever reason, they stayed in that realm while everyone else went to Maine.
She mainly teams up with Mulan and soon they end up against Cora and some other beings of dark magic.
Mulan ends up leaving her side as she started to have romantic feelings for Aurora, who was probably oblivious to it.
She stays on the show for a bit longer after the whole Cora thing. She mainly is a mom and she adopts a new life in Storybrooke, Maine.