Possible Clues:

• Too old to be useful – duenna tears up (anag)
• Antiquated
• Out of date — and pure Austen (anag)
• A1 to the south, Aunt Edna rambles past it
• Obsolete
• Retired with pension put as "unearned", surprisingly
• Great girl, you hear, with a boy that's passe
• Past it - pensioned off
• That's splendid, Ann! You got a man with a pension
• Light