In the book "Betrayal in Death" by J.D. Robb, a character is depicted as small and light, weighing just about a hundred pounds. The narrative emphasizes her vulnerability as she struggles with a critical situation involving a lack of oxygen. This scenario illustrates her physical limitations and the intense pressure she's under as she fights for her survival.

The mention of her going limp under such challenging circumstances highlights the severity of her experience. It captures a moment of desperation and shows how her physical state impacts her ability to cope with the stress and danger surrounding her. This moment contributes to the overall tension and emotional depth of the story.