My 3 year old daughter has had a fever for several days and saw a Dr. He said it was only a viral thing. Her fever hit around 106 earlier and was fine for a couple hours and it's going back up now and her neck hurts bad on the back. We're are 2 hours from the nearest hospital. What should I do? Could this be serious?

Yes. This could be very serious. Please make the 2 hour drive to the ER.