Thanks so much for your replies. As a mother, I feel guilty for doubting my daughter's complaints. But I will take your advice and see where things go. Thanks again.
Here's a pediatric ophthalmologist...your daughter's complaints and behavior are almost certainly fabricated. I hear this precise constellation of issues all the time - blurred vision near and far, holding schoolwork close and twisting or tilting the paper or the head or closing one eye. You have two options: 1) be satisfied with the 2 previous normal exams and firmly ignore these behaviors and complaints, 1b) if the complaints continue you can start subtracting 'vision privileges' such as computer time, TV time, etc, OR 2) take her to a pediatric ophthalmologist Eye-MD. If that person says she fine, she's fine. You can then utilize 1 and 1b above with a clear conscience. You can find a pediatric ophthalmologist at www.aapos.org.
She could be hyperopic and needs a cycloplegic refraction--a dilated exam for glasses. See a pediatric ophthalmogist.
Dr. O.