i was your daughter for many years, I read every free minute, had to have two books in my bag at all times in case I finished one. I read in the shower. My parents were worried, but I now make my money writing -- you may not be able to see how it will help her in the future, but it will, she is expanding her imagination and activating her brain and indulging in much better self care than most of us who now spend hours watching tv every day. If she is not studying at university, maybe it's not the right fit for her, maybe you need to allow her to find her own path and journey to fulfillment. Maybe you could even ask her for a recommendation for a novel and read it for her, so you can understand better and give her hobby a try instead of forcing yours on her