Possible Clues:

• Subject of some gossip
• No wife, save for a Scot
• As a teacher, I am spinning around with nervous tension
• She can stir it into a mess
• It's not the wife that's all hair towards the end
• What's grand is the hair she has
• Grand is her 18 down, but she's the boss (8)
• For her it's a grand strain if being in charge
• The other woman
• I'm back to strain, but not with my wife