You want to read what?

So the other night I brought the owner's manual for the car inside. I wanted to see if I could figure out how to program something. Truth be told it seems hard and I never even looked at the book. However, Hadley saw it the next morning and started "reading" it. I loaded her up in the car, put the book back in the glove compartment and she flipped!!! By flipped, I mean yelling from the backseat, "where is my white book, I want to read?" Once I got her calmed down and stopped the car, I promised she could read it that afternoon if she was a good girl. That afternoon I picked her up from school and the first thing she asked for was the white book. She then read it all the way home, insisted on bringing it inside to read, insisted on taking it with her this morning, read it all the way to school this morning, then asked for it again as soon as I picked her up. To tell the truth I'm a little confused by her fascination, I can't even muster the courage to open it, did I mention what I need it for seems hard? Thoughts on what could be so fascinating in this manual? Future Mechanic, because we have already established she won't be an Engineer, see this post?