Her character was shown much more clearly during the Waking the Dragons arc. She brought Yugi and Yami Yugi to the World of Duel Monsters to revive the Legendary Dragon Timaeus to help them to fight Doma. She did the same with Kaiba and Joey who gained the dragons, Critias and Hermos.
From the manga/anime Yu-Gi-Oh!, Dark Magician Girl, as a stylized Pop vinyl from Funko! Pop Yu-Gi-Oh! Dark Magician Girl Vinyl Figure #390 stands 3 3/4 inches tall and comes in a window display box. Collect them all!