|Place of birth:||:||Illinois - USA|
She is the daughter of Dorothy and John Gardner, of Winnetka, Illinois. She graduated cum laude from Columbia College, Columbia University in 1990. Her father is a partner at the Chicago investment bank William Blair & Company; her mother is president of the Michael Reese Health Trust. In 2010, she married Jonathan Boris Berg in an Episcopalian ceremony on Martha's Vineyard.