Crossing the Line (The Grave Robbers' Chronicles Anti-Su Fan Fiction)

I woke up to find that I had gone back two years, to a time before anything had happened. What? Someone from another world has appeared? Could it be that I came back to stop her from changing the world? The female lead is an original character, and there is no romance. This is purely about a self-indulgent girl who wanted to believe she still had a chance, and who turned back from the wrong path. My writing skills are limited, so please point out anything that doesn't make sense. Theme: