Narration is hard! I belong to a bookclub and I decided to do narration for myself with our monthly book selections. I read part of a chapter, closed the book and narrated it to myself. My head hurt when I first started, and I was humbled by how difficult the task was! But I have improved (sort of) with time. I encourage you to be patient with your daughter as she learns this new skill.
One thing you can do is model narration yourself. Read a short section and then you narrate it without asking her to do it. After awhile, you could then say, "Did I miss anything?" If your daughter wants to add something you missed, fine. If not, continue your reading and narrate yourself again. Gradually increase your daughter's participation in the narrations.
You can also say to your child, "Tell me ONE thing I just read." No matter what ONE thing she picks to narrate, accept it. Perhaps add something to it or simply say, "Okay, let's continue with the story."
Try narrating yourself but get the details mixed up and let her correct you.
Drawing a scene from a story is fun, if your daughter likes drawing. You could ask her the most exciting part of the story or her favorite character and ask for an illustration of that. Again, don't expect big results at first. My kids reluctantly drew pictures as narration in the beginning, but now they draw characters and scenes, make board games and diaramas and posters and maps...but this is the course of narrating for a few years.
When my oldest first starting narrating, she didn't do a good job. I remember her saying, "I want you to read the books but I DO NOT WANT TO NARRATE!" I was disappointed and frustrated. But now she can narrate very well. My second child was better in the beginning, and I think it's because he heard his older sister narrate and he followed her example. The process wasn't entirely new to him like it was for my older child.
Don't be afraid to take it slowly. With practice, it will come.