Created an account just to follow up on this. I think the game is at its best when either you and miss beautiful eyes don't know where each other are or when only she knows where you are. I think the best direction to focus on for the game is miss beautiful eyes in particular and how she interacts with/changes the environment, plays with your mind, and possibly drops hints about the story as the game plays out (unless you plan on telling the plot separately).
-hiding in lockers seems to be a placeholder idea for now, which is cool, but miss beautiful eyes either seems to ABSOLUTELY know you're in one and walk straight towards you or not even know where you were before you entered one. Either because there aren't many places to hide in the first place and therefore less places to check, or hiding is just more of an experiment for now. I'd just be careful about adding too many hiding places so the player doesn't always feel comfortable hiding forever till she leaves like in Alien Isolation. And also not to give the player too many ways to ward miss beautiful eyes off like in Dead by Daylight, which takes away the feelings of fear, helplessness, and paranoia.
-as others mentioned about the AI, the game kind of loses it's grit when the AI doesn't quite know what to do around terrain. So either better pathing or very occasionally doing something crazy like jumping a desk is what she needs. The player learning her habits can harm the experience as well. Maybe have miss beautiful eyes get frustrated and change tactics or even weapons at random intervals to make sure the player doesn't get comfortable. I think someone mentioned traps, maybe having her crawl under desks or hide in lockers, or even create some terrain cues in the environment for the player to watch for. Like a wire or blood splatters on a doorknob to a non-progress-impeding room for a trap where she locks you in the room with her.
sorry for the paragraphs, but I'm excited to see what you plan to do with this!