Describe Thomas Schell's first meeting with his future wife?

Thomas cannot speak by the time he meets the unborn child's mother, who sits at his booth and chatters. Thomas writes that he does not speak. She writes back, "Please marry me." He flips back to "Ha ha ha!" and she flips forward to her request. They flip back-and-forth until she points at "please." Thomas thinks about losing the one person he could have lived with and the tons of marble he has abandoned. Feeling pathetic, worthless, and helpless, he points to "Help."