u/Afraid_Eye_9625

It’s a flash game I used to play on kontraband.com. It features a Japanese-like female ghost chasing a girl, and she has to hide behind hospital curtains or under desks to avoid the ghost when she's in the same screen. There are two versions of the game-the one I remember is set in a hospital, where she has to find different supplies to escape.

Edit: Main character is a school girl