Try and find something she's interested in. I was this way all throughout high school because nothing ever interested. When I got to college and started studying CS though, I was extremely interested and always wanted to know how things worked, I still knew most of the answers without trying, but I would dig in to see why the answer worked. This saved me my Junior year when we started getting into complex concept that I couldn't just "figure out". Having something of interest (to the person) to study will almost always lead to better study habits.