Who's the Boss? S03E22 - Reconcilable Differences

Tony has met Fiona at the dentist and get her a job as secretary at Angela's agency. The tidy-minded perfectionist Fiona is Angela's dream but also Mona's nightmare. After an argument between Mona and Angela Fiona quits because she doesn't want to stand in the way of the both. But Mona quits, too.