the red haired woman

i came back because i thinked it have more info about all, but most of all, the red haired woman but it appered more questson.
I have two guess who is the red haired woman:
1, og timeline (which fl also read about) there is a scene where she was with the blonde og fl. The black haired hot dude who is the twin for the ml master called fl master. I think the red haired woman was someone who anything to do with the blonde of fl and the black haired dude. Maybe she turn back the time to save a world?
2, the fl in the 1 ch says she read the story in her previous life. What if she didn't read but she was there and see what happened, thanks to the eed haired woman, who was lived in the og story?

Its a inaccurate theory but i hope someday whe get a clue who is she. I just read this all because her Σ(っ°Д °;)っ