Sunny shows up at Holden's room ready to go. She takes her coat off and sits down on the bed in her green dress.
Holden notes that she looks really young (not much older than himself) and nervous.
She refuses a cigarette in her "tiny little wheeny-whiny voice" and says "Like fun you are" instead of swearing when Holden tries to claim he's twenty-two. In other words, we can really tell she's a young woman.
Sunny takes her dress off and asks Holden if he has a watch. She thinks it's odd that he would rather talk than have sex, and asks him to hang her dress up in the closet so it won't get wrinkled.
The dress in particular makes Holden sad; he imagines her going to a store to buy it and the salesman not knowing she was a prostitute.
Holden deems her a lousy conversationalist. She believes his story about an operation on his "clavichord," which is more of a musical instrument than a body part that would inhibit his ability to have sex.
Sunny starts "getting funny. Crude and all" with Holden, which we know means she tries to get him in the mood. He tells her to cut it out – on account of his operation.
This frustrates her, so Holden says he'll pay her and she can leave already.
Sunny asks for ten dollars, but shrugs and takes five when Holden insists that all Maurice told him it was supposed to cost only five.
Sunny comes back shortly after with Maurice, looking for the other five dollars.
While Maurice threatens Holden, she takes the money out of his wallet. She makes a big deal out of the fact that she's only taking five and therefore not a thief.
Sunny tries to get Maurice to leave (and leave Holden alone) once she's got the money, but can't stop him from punching Holden in the stomach.