I'm not very smart.
That damned Fanlit challenge niggled at the back of my mind until I had another go. It didn't matter that the heroine's claim to be a Countess flew in the face of the laws of succession/inheritance for English Nobility and would have been laughed out of any Regency Drawing Room (My first attempt at least gave her a legal claim to the title) flawing the whole premise of the story. I was sucked in a second time.
The only benefit is that I've filled my quota of submissions and go back to productive work.
It still itches though...