Requiem for a Dead Briard - S10-E3
Continuity mistake: When Peg is comforting Kelly about Buck passing away, she is holding a bag that says "Petropolitan" on the front. The next shot when they go back to her, all a sudden the words are gone from the bag she is holding and Bud is holding a bag with those words.
Answer: It's implied that Steve filed for divorce since in s04e16, "You Gotta Know When to Hold 'Em", Marcy says that Steve is suing for alimony. Alimony is something that has to be requested when filing for divorce. Although the show doesn't spend time on the actual legal proceedings of their divorce.
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