ok, well i am not sure if it is a bug or just me being dumb. i had passthrough on for all NPCs but if u turn that off and interact with Fuuka (idk i clicked on her with scissors) she will go into phase 2 or smthn so now i am fighting her again and will hopefully be able to leave afterwards.
(It did work, moral of the story is that if you cannot interract with something you should, turn passthrough off and try again)