Is anybody very familiar with Google Docs?

Hello everyone

To make a long story short, one of my composition essays was reported to the Dean of Students for scholastic dishonesty. I DID NOT utilize AI or cheat to write my essay. I forwarded my essay for the dean to review and was looking over the version history in Google Docs and it's not showing a complete account of the progress of my work. It looks like some of my work was copied and pasted because it doesn't show all time stamps... There are hours of work not accounted for in the version history... idk what to do or how to explain this to the dean. Is anybody very familiar with Google Docs and why this happened?