I can’t for the life of me remember the name or where I read it, but… FL has a guy fall from the sky in front of her. She saves his life and he gives her a token of some sort as a reward. FL blows it off, but that guy is the leader/god of the demon/devil/evil (?) sect and the token makes her the holy lady. The guy that fell from the sky has been chased around by another expert for the last 100 years or so. She also goes to the evil sect to trick them into helping her save the school she goes to. That’s when she finds out she’s the holy lady.
Nice, it fits the story but i bet its a cultivation novel Mushoku Tensei, The Mc fell from the sky during the "great teleportation incident", i can't remember which volume
I remember it being a rebirth novel. The MC uses the token to command demon sect and save her sect from annihilation. Could be this one: https://www.novelupdates.com/series/rebirth-of-the-strongest-female-emperor/
I'll be honest I thought this was going to be another Florida man story from the way I read the title lol