so i have the problem in arc 1 that i have to speak with christa in the evening to advance to arc 2 but everytime i advance her in the evening in the room all i get is leave
Because she told you to come to sleep with her. Try reading dialogues, mate.
its not that one, the line goes "maybe its time to talk to christa? she´ll be in her room in the evening, i go to her and only get the leave prompt
I told you. The diary doesn't update on every little thing, she told you that but you don't read the dialogues.