Before Season 1Edit
Kay was present on numerous occasions when Earl caused problems for his father as a child ("Cost Dad the Election"). Earl and Randy stole some homemade coupons from a young Kenny James and gave them to Kay, but never fulfilled their contents ("Dad's Car").
Kay was present when Earl tried to help his father become mayor for a second time ("Cost Dad the Election"). After Earl realised that he had never gotton his mother a nice gift, he spent a whole day making it up to her on Mother's Day. She asked him to do something nice for Carl, and Earl ended up spending lots of time with Carl, and they bonded ("Dad's Car").
Carl found out about her affair with Clark Clark and left her. He tried to fight Clark, unsuccessfully, and tried to have sex with someone else to get revenge, unsucessfully. He eventually realised that he still loved her and wanted to be with her, and decided to go back home and forgive Kay ("Monkeys Take a Bath").