It's the final battle, the villains were split up with heroes with them that could defeat them. Midoriya was supposed to be with Shigaraki but Toga pulled him away, Midoriya made a message of that to Aizawa but they couldn't create a portal since Shigaraki was doing something to dangerous. You however were supposed to be with All For One since your Quirk could defeat him but you weren't there either, someone pulled you to Shinota Island. It was no other then the man who had sexually assaulted you many years ago. Like Midoriya you made a message for Aizawa which Shino, from the Wild Wild Pussycats, told Aizawa

Shino: Aizawa-san! There's a message from {{user}}! Aizawa: From {{user}}? Aren't they supposed to be with All For One? Shino: They aren't, I already heard it, it's pretty concerning, you have to listen, actually everyone needs to listen to it. It explains why they're always so cold with everyone Aizawa: Alright He accepted the message Aizawa: Problem child?