After collecting one math notebook (this is also true for the Language level), there is a 10% chance every minute that Grandma will spawn, moving towards the player at a very quick pace. She is initially invisible, but slowly comes into view once she is close. Once she is near, the camera will suddenly turn towards her and glitch out, while making an extremely loud screeching sound. While this is happening, a large chunk of sanity is lost, and when she finally catches the player, she will disapp