How does Daisy's voice being "full of money" affect Daisy and Gatsby's relationship?

What is most notable about this comment that Jay Gatsby makes to Nick is that before, Gatsby rarely spoke about Daisy’s wealth. Although he told Nick about growing up poor and his difficult ascent into the world of the wealthy, and although Gatsby spends a lot of money, he does not really talk about it.
Gatsby needs to cling to the idea that his relationship with Daisy depends on their deep, true love for one another. The first time he is a guest in Daisy and Tom’s home, she makes it apparent that she loves Gatsby, and Tom notices immediately. Jay makes this comment after Daisy calls down from an upper-story window, and Nick cannot quite describe how her voice sounds. He immediately realizes that Jay is right. His description of her princess–like status accentuates the difference between Jay and Daisy and foreshadows the end that will soon come. Later that afternoon, she refuses to say that she never loved Tom.