I have successfully gotten through the gate with a glitch, but when I press the button to open the door, nothing happens and I am stuck on the other side of the gate until I eventually load my last quick save.
I cannot go back to before I met her, as I did not make saves through the game and would be going back to the beginning. I just want Serena to stop following me. I can’t even trade things with her or tell her to wait somewhere.