As Alice gets eaten by the Duke, he falls down to a small house where Marianne lives. It seems that Alice knows her (also about the teacher and Dinah) since he calls her "Big Sister." Marianne then prepares a feast of sweet treats for Alice. When suddenly, Alice kills Alice (his big sister) for his name is only Alice.
As Alice is being dressed as a woman in a shop, the Mad Hatter and the Cheshire Cat mentions that it seems that the White Rabbit purposely "saves" Alice from his "abandoned past," where indeed, Alice is a "sibling" of Marianne.