Anna's mother, Elsie Beaumont , was formerly from Ravenclaw. Her dad on the other hand, Rogic Kozlovski, was from Gryffindor, like her.
From her mother's side, Anna some relatives in Hogwarts, and some of which have already graduated. Her older cousin, Savannah Stone who graduated from Slytherin. Charna Wellington, Slytherin 7th year, her cousin. And Celestina Warbeck, a graduate(DE) and her cousin too.