On part 2 of Oprah's Lifeclass​ for single mothers, actress Nia Long shares her painful experience of having to grow up too fast and "be the adult," to protect her mom.  She tearfully encourages a young girl in the audience to "allow yourself to be a girl, to be a child," and to "forgive your mom." Catch Oprah's Lifeclass on Friday at 9/8 C, only on OWN. 

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