Alice had sisters who played a role in the story?
Yes, she had four sisters and two of them played roles in the story, besides Alice. The two sisters in the book are the oldest, Lorina, (Alice herself as the next oldest), and Edith. (Alice’s mother was also named Lorina). One of the places they appear is in the Mad Tea-party dialog where the Dormouse told of three little sisters with names Elsie, Lacie and Tillie who lived at the bottom of a well. Elsie is L. C. (Lorina Charlotte Liddell), Tillie refers to the family nickname of Matilda used for Edith and Lacie is an anagram of Alice. They also appear in nickname forms in the “Caucus Race” episode. Alice talked with a Lory (Lorina) and there was an outspoken Eaglet (nickname for Edith).