The answer to the question is simple. Have the yearbook examined by experts. But Allred won’t allow it. Why? Because her case would be dead if the truth came out, obviously.
Allred wants an investigation to go along with any forensic examination, why isn't Moore interested in that?
Is Moore in control of wether there’s an investigation or not? No, he is t. It’s a bull shit dodge by Allred. If the examination proves that he wrote it, then there will be an investigation. Has to be. She is simply refusing to let it be examined prior to the election. Why? Likely because it’s a complete fraud. Why else?