I really hope you don't win that bet, but I suspect you will. At least this will go down as a learning experience!

[She wouldn't even think to ask for a back rub. Maybe a trip to the store for some painkillers at most, but she's not sure she'd want anyone to see her in the miserable state she'll be spending most of tomorrow in.]

Oh! That's a great plan! I'll do that and she'll never be the wiser. The extra cost will be my penance.

I owe you a couple at this point.