Anna Larson is Kirsten's younger cousin, who is seven during the events of Kirsten Learns a Lesson and eight by the events of Happy Birthday, Kirsten!. It's likely she was born in America. Anna is cheerful and fanciful, and loves things to be "grand." as well as secrets and surprises. She likes things to be beautiful. She's very positive and optimistic and admires Miss Winston, the teacher at Powderkeg School.