it's no joke you really need to answer every encounter with her correctly or she doesn't give you her hair. People have checked and if you answer incorrectly even once she doesn't give it to you. If you speed run the game you can get to that point in 25 minutes if you are lucky. Someone even played I think 60 days after to see if there would be any repeat events where you could gain affection with her. While you do interact with her you don't gain any extra affection so you have to restart and correctly answer everything to get further into the game.