I, myself, have been guilty of skimming or as I like to refer to it – gulping instead of savoring a book. I am always sorry later. Just as when I over eat!! I have had to discipline myself. I think for some, it is an issue that they will have to work through.
Maybe you could make it a “habit” to cultivate with her. Is there a habit in Laying Down Rails that might somewhat apply that you could work on over the course of 8 – 12 weeks? This may be a way to help her rid herself of that habit by replacing it with another in her reading. If you use the format in Laying Down Rails you would be doing so in a positive way – not “alway telling” as Charlotte said. It will help your daughter to develop her own resolve in this area.
Also, I have found that “narrating” what I am reading either to my husband or with a friend,
( we pick a book every few months to read and then meet for lunch to discuss) I slow down and savor the book. So be sure there is a lot of narration going on. That accountability may slow her down. It has certainly helped me.