She might be interested in the mystery genre. Murder stories usually involve a lot of puzzles to solve, like who the killer is and what the motive was.
We don't have enough information to know exactly who Karen is. She could be an ordinary person, a student, a teacher, or just someone who likes to read stories.
Given only 'dateline karen read story', Karen's identity remains a mystery. She might be a staff member at Dateline who was reading a story for work purposes. Or she could be a person who was interviewed by Dateline and was reading a story during the interview, or she could be an ordinary person whose story - reading experience is being highlighted in relation to Dateline.
Perhaps she would feel a sense of unease. Even if the story is fictional, the concept of murder is disturbing. It might make her think about the darker side of human nature and the fragility of life. Reading about the details of a murder, such as the victim's experience or the cold - bloodedness of the killer, can leave an uncomfortable feeling.
I'm not sure which specific 'Karen Read' case you are referring to. There could be many cases involving people named Karen Read. You need to provide more context to help me answer accurately.
I'm not sure specifically as there isn't much information given. It could be a story read by a person named Karen. Maybe it's a personal story, a fictional tale, or something educational that Karen decided to read.