In this episode, the girls respond to two letters. The first, from a new mom who's worried about how much she's been drinking in the first months of her baby's life while breastfeeding, and the second from a girl grieving the loss of two long friends that don't support her new sobriety. This episode is about the let downs: things we think we "should" be able to do, like choose people we love over alcohol, and the ways our relationships change despite us wishing they wouldn't.