Dick's mother, Ruth, comes into town and everyone is on edge because she doesn't get along with Angela at all. Sam is tasked with picking her up at the train station but ends up picking up the wrong grandma. Once Grandma Ruth is correctly picked up and brought to the house, she proceeds to start insulting and picking on Angela. Sam tries to walk the fine line and agree with both of the women. Unknowingly, Sam gives Ruth alcohol and she proceeds to get completely drunk and runs around the yard. Meanwhile, taking care of Sarah's baby, Sam accidentally lets her eat one of the wedding rings. He has to search through the baby's diaper to find the ring and ends up soiling Angela's old wedding dress that Melanie doesn't have the courage to say she doesn't want to wear. He does get Angela and Ruth call a tentative truce and even apologize to one another.