A 2009 graduate of Kingswood Regional High School in Wolfeboro, N.H., Lander was a four-year letter winner in lacrosse and field hockey. She was coached by Ali (Hoffman) Cushing who is a 2001 Plymouth State graduate and former member of the women's lacrosse team.
Marie Anna Lander is the daughter of Bill and Susan Lander. She has two brothers (Chris and Sean) and three sisters (Heather, Meghan and Kellie). Sean played lacrosse at Nazareth College and Megan is currently running cross-country at Lesley University.