Twist of Chance — Elizabeth Carey

It began in the kitchen of a roadside inn. Louisa, in the act of trying to rescue a small dog from the inhumanity of the innkeeper, was herself rescued by the dashing Lord Braybury.

He mistakenly assumed that she was a fortune hunter. But, in truth, it was Louisa's fortune that was being hunted by her fat and greedy guardian who would stop at nothing -- even forcing her into a marriage -- to get his hands on her money.

Only later does Lord Braybury realize the truth. And by then it is almost too late.