Daisy through Marxism (Sarah)

The Marxist interpretation of Gatsby, “You Are What You Own,” gives us a very clear perspective of Marxist theories and how the capitalist system of America plays a vital role in The Great Gatsby. However, one important aspect I feel Lois Tyson skipped over was Daisy. Daisy is seen as a commodity, something to be bought and sold. We can see the references of Daisy to money numerous times throughout the book, however, the most memorable is "Her voice is full of money," he said suddenly. That was it. I’d never understood before. It was full of money — that was the inexhaustible charm that rose and fell in it, the jingle of it, the cymbals’ song of it,”(120). At this point the reader realizes Daisy is a commodity, like money, that both Tom and Gatsby want. Seeing as Tom nor Gatsby represent old money, it is obvious they only want Daisy because she is true old money, however, what I still do not understand, and what I propose to you is why if Daisy represents true old money would she marry or love someone that was not old money (Tom or Gatsby)? Because through a Marxist perspective this would lower her social standing, which is the exact opposite of what all people are trying to achieve (in a capitalist system). Is this simply a flaw in the theory or does it say something deeper about Daisy and her intentions?