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stage mother

n. (context US English) the mother of a child actor

Wikipedia
Stage mother

In the performing arts, a stage mother is the mother of a child actor. The mother will often drive her child to auditions, make sure he or she is on the set on time, etc. The term stage mother sometimes has a negative connotation, suggesting that the individual is prone to obnoxiously demanding special treatment for her child, or suggesting that the individual has placed inappropriate pressure on her child to succeed. Some believe that a "stage mom" is vicariously living out her own dreams through her child.

Stage Mother (film)

Stage Mother is a 1933 American Pre-Code drama film directed by Charles Brabin and starring Alice Brady and Maureen O'Sullivan. The film is about a frustrated vaudeville performer who pushes her daughter into becoming a star dancer; selfishness, deceit and blackmail drive mother and daughter apart until a reconciliation at the end of the film. The film's screenplay was written by John Meehan, based on the 1933 novel Stage Mother by Bradford Ropes.