Other mistake: When Joan is cutting up her rose garden, she is ranting and raving about how mad she is at Mayer, and how they're calling her box office poison. But if you look closely at her lips, they aren't moving.
Other mistake: When Mommie is beating Christina with the wire coat hanger, the padding on Christina's back is visible, and you can tell by the motion of "Mommie's" arm, that she is not using any force.
