She attacks me for saying the historians all agree my points even though it is a fact

How many times, Keith? Not all historians. Remember that even you agreed that only the historians that meet your criteria that you have read agree with your points. Even that is in dispute now it seems that people who have read the same works have not interpreted them in the same way. Yet you still claim it to be a fact.

Are you really so insecure that you must get everyone's approval before your are happy? Why not just accept that some people will always disagree with you. It is not as if it matters to anyone but you.