On the one side a disappointment for Miss Cameron.

I don't doubt she's counting on coming, but at worst a worldly disappointment.

And the very grievous humiliation for you of writing to tell her that you have made a mistake.
You deserve that, Finlay.

If you wouldn't be a man who has jilted a woman you have no business to lend yourself to such matters with the capacity of a blind kitten.

That is the damage on the one side.