Quote 1
"Here, deares'." She groped around in a waste-basket she had with her on the bed and pulled out the string of pearls. "Take 'em down-stairs and give 'em back to whoever they belong to. Tell 'em all Daisy's change' her mind. Say: 'Daisy's change' her mine!'" (4.129)
Talk about cold feet. Daisy knows that the fabulously expensive string of pearls that Tom gave her is about to become a chain. When she's drunk, she wants to change her mind and marry the man she truly loves. In the cold and sober (and probably a little hungover) light of day, however, she does what she was born to do: marry the rich guy.
Quote 2
Suddenly, with a strained sound, Daisy bent her head into the shirts and began to cry stormily.
"They're such beautiful shirts," she sobbed, her voice muffled in the think folds. "It makes me sad because I've never seen such – such beautiful shirts before." (5.118-119)
Talk about love. Daisy is so in love with Gatsby that she can't even handle being near his shirts. Or is something else going on here?
Quote 3
"Who wants to go to town?" demanded Daisy insistently. Gatsby's eyes floated toward her. "Ah," she cried, "you look so cool."
Their eyes met, and they stared together at each other, alone in space. With an effort she glanced down at the table.
"You always look so cool," she repeated.
She had told him that she loved him, and Tom Buchanan saw. He was astounded. His mouth opened a little, and he looked at Gatsby, and then back at Daisy as if he had just recognized her as some one he knew a long time ago. (7.79-82)
Rich people—they can't say anything directly. Everything is done through innuendo and suggestion—like Daisy's bizarre confession of love.