I have a felling that her dad knew something was up with her reading but did know what to do is he did the only thing he can do give her money to buy books if what to.
I think I know what the parent is doing there forcing there son to tell her in the most angry way to tell her that she is not pregnant and he can't give her a kid because there blood do not work well together.
It seems she has a little of Stockholm syndrome for the emperor.