How refreshing to find someone like me! I also quite like Lucy Steele. That is, while I view Elinor as morally superior and more deserving of Edward's love, I do find some qualities about her that I don't particularly like. In addition, how do we know that Lucy didn't love Edward? I accept that his money was the main motivation behind her wanting to keep him, in that society most women would have married for money. Can we blame Lucy for her actions; surely we should blame the society that caused women to have to behave with some self-centredness in order not to end up completely destitute through life. We are told, after all, that Lucy has next to nothing; unless she married well, her prospects wouldn't be very good. At any rate, even supposing her to have absolutely no affection for Edward himself, you have to feel a bit sorry for her when after so many years, she feels her engagement under threat by another woman whom Edward so obviously prefers.
Incidentally, I also feel a bit sorry for Isabella Thorpe, the way it all crumbles around her. I don't think Austen intends for us to sympathise with either Isabella or Lucy, but in the case of the latter, she is obviously insecure - and with good reason! Personally, I can't and don't blame her for her actions. In fact, were I in her situation, I would probably have done the same.