Ava DuVernay is making history with a film adaptation of the beloved children’s book, “A Wrinkle in Time.” She's the first woman of color to direct a $100 million film. DuVernay told NBC that the film is a "love letter" to black girls everywhere. She said every day on the set was like "black girl magic." On the set, she says there weren't any challenges -- only blessings.