lvl 5 you need to have given her the first book, touched her while sleeping and also sleep in her bed. how to get to lvl 6 i have no clue as the game seems to not let karl say anything other than "not much just thinking"
I have done all that and still stuck on lvl 4
idk then. this game is a litle rough still so idk if we are running into a glitch or not cause i still cant get to lvl 6
that's why I said they should put in a walkthrough for the story that isn't vague as fuck