Is this the right save? I loaded, refused to fight the robot, met up with Ochaco in the school building, then walked with her to her workplace (Store). Next day I visited her there in the afternoon, she was there, and the event processed like normal.
Same with accepting the fight and beat the robot.
After this, I visited the cave. It'd already been cleared, so I couldn't verify the cave issue.
Then I returned and played the rest of Ochaco route like normal.