Weixler graduated in 1999 from Atherton High School in Louisville, Kentucky, where she also attended the Walden Theatre Conservatory Program and was in The River City Players acting group and in the Chamber Singers choral group. Subsequently, Weixler, attended Juilliard where she was a classmate of Jessica Chastain. She was a participant during the first year of Bruce Brubaker's InterArts performance project at Juilliard.