How does Curley’s wife’s conversation with Lennie depict her as a sad, lonely character?

In Chapter Five, Lennie's conversation with Curley's wife depicts a woman who is clearly starved for conversation and attention. As they talk (Curley's wife does most of the talking), she launches into a reprise of her discontented story of what might have been. She insists that she could have been an actress. Lennie fails to understand her at all, however, as he continues to return to the dilemma of the dead puppy and his anxiety over being denied the right to tend the rabbits. Curley's wife angrily asks him why he is so obsessed with rabbits..... again, it's all about her, and a distinct need for attention.... an example of loneliness.