MFG Movie and Video Preview: May 9

Mother’s Day Weekend beings three fine new films-two based on true stories-that focus on women of all ages and stages of life.     Belle Handsomely filmed, beautifully acted, the true story of a half-African woman raised in an aristocrat’s home at the tail end of slavery in the British Empire takes some of the hard themes studied in 12 Years a Slave and wraps them in Jane Austen finery. The luminous Gugu Mbatha-Raw plays the title role; Tom Wilkinson …