How old is she??
I haven’t trained my kids to narrate well either. My 12 yr old listens intently and then tells back main events without any connections. She does have a hard time making connections of all kinds though.
I don’t think I’d have her reading to herself if I wanted her to get more out of it. But I guess that would depend on wether she’s 10 or 17!
You could also both read a book and discuss together some of the more interesting or subtle aspects of it. Maybe that would interest her.
My kids haven’t gotten to where they appreciate narrating yet. But most of their personal reading books are ones I/we have read and I can ask with sincere interest where they are in the story and talk about it.
I can see that you might not want her to have the habit of flying through books, because that could carry over to books she needs to not fly through. Maybe someone who is better at habits can help with that. (That’s not my strong suit-yet).
I don’t know if that all was very helpful, but I hope so.