To begin, I don't think Paige realizes what she is really saying here. As a Postmodernist, she does not believe in metanarratives, absolute truths, or pushing beliefs that she has on others. Her argument, on the other hand, does exactly this. Here, she is most certainly making a truth claim about the state of history, which is contradictory to her belief system.
As for her argument, I personally believe that for the most part history is reasonably and fairly written, as well as objectively true. History, in and of itself, has a system of checks and balances which makes this possible, including the fact that it was written by everyone: winners and loosers alike. It would be unfair to completely discredit Paige's statement because of course some of history is written by the winners, but then again, some of it is not! However, to add on to this, I think the real argument against Paige's statement resides in the fact that history, for the most part, is and was written by eyewitnesses of events that have occured. What better evidence, what better credence is there then from eyewitnesses to events in history?
One of the best examples of the reliability of eyewitnesses is during the past wars that have become a part of our history. The Civil War, and both of the World Wars have been documented in history because of eyewitnesses who have taken the time to write down their accounts of what has happened, whether or not their side was winning the battle, or ultimately the war. It is when countless accounts of historical happenings from different points of view match up (which has happened in all of these named wars), that history comes alive as being a true, reliable, and objective source.
Think for a minute about the city of Troy. For years people believed it to be fake-to be a made up story by author Homer, in his book the Illiad. However, in 1870, archeologist Heinrich Schliemann found reminants of an ancient city, using clues and directions he found refrenced in Homer's books. Though people may claim history to be fake, and not objectively true, even true tales of lost cities from long ago match up with what authors say.
In closing, it is important to realize that people, like Paige, may have their own opinions about the importance of events in history, but you cannot doubt the facts: the eyewitness proved, objective facts.