I think this is probably a bug but it could be just me, when I talk to charlotte after getting the prompt to talk to her in the notebook it just gives me the same dialogue over and over (all times of day) and doesn't progress the story. (PS I love your game and keep up the good work)
Multiple people have reported this bug, and we're trying to figure out what causing it asap.
Could you share you save file if possible?
Also, could you provide a bit more info on what did you do before the bug occured? Which part of the route is it exactly? After you discussed public session with both of them I assume?