Beth Sister is a term used to refer to the four sisters of the Little Women novel by Louisa May Alcott. Meg, AMY, Alef, and Louisa are the names of the four sisters. Meg is the eldest and has three letters, AMY is the second oldest and also has three letters, Alef is the third oldest and has four letters, and Louisa is the youngest and has six letters. ALEPH is an alternate spelling of Alef and has five letters.