When Ruby undermines Bow's plan for breastfeeding DeVante by giving him formula, Bow finally loses her temper. She's struggling with several symptoms of the mood disorder, and Ruby's total lack of empathy is making her feel even worse. Bow kicks Ruby out of the house, and Dre backs Bow up when Ruby protests. Watch this scene from Season 4, Episode 2, 'Mother Nature,' and don't miss black-ish TUESDAYS 9|8c on ABC.