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I shall, on the quiet, slip her the receipt & tell her to just take it back if it isn't quite her thing...
(And please, no-one make any jokes about me 'slipping her one' - I am on the verge of breakdown. Sorry, on the verge of being banned. I have finger dyslexia today.
And please, no jokes about fingers either).
I had thought of a nurse's fob-watch 4getmenot & Stompe - but apparently her boyfriend is buying her one of those when she starts her course.
Thank you for your comments.