Winning The Wallflower by Eloisa James

This is a rather cute little novella about Lucy Towerton, the wallflower of the ball, who stands heads taller than most of the men. She has recently inherited some money, so her mother is wanting to put her "back on the market". She is currently engaged to Mr. Cyrus Ravensthorpe, who never truly asked for her hand. She despises the fact that her mother would have her searching for another man, knowing that the reason they are seeking her is her money. She decides that she would prefer to keep her engagement to Cyrus, as he is the best looking and taller than she. She decides she is going to compromise Mr. Ravensthorpe so that her engagement will stick. She gets him alone and they definitely "compromise". She becomes a little enamored of him and learns more about him. I'll let you read the story to learn if they work things out. Cute, cute story. Lucy is no quiet little woman.  http://www.eloisajames.com/