Ah, what a happy occasion! Happy birthday, m'lady, and may the coming year treat you with the best of luck!

[ a bright, beaming smile because gosh, that sounds like an excellent idea, choosing one's birthday here. and having an excuse to celebrate is always a good thing! ]

Eh -- I'm afraid a swing is a bit beyond my capabilities, as is a cake, but ... [ a slightly sheepish laugh ] -- I don't suppose you'd fancy any pastries? I think I'd be capable of those!