Sister

Girl's Sister is a side character in Cat in a Box. She is not given a name other than "Sister" in her text box.

Appearance
Sister has upper back length, straight, black hair parted to her left side. She wears a gray turtleneck sweater. Her in-game sprite has dark blue eyes and a red headband. In the image in her text box her headband and eyes are both pink.

Trivia

 * Sister is a protagonist in STYGIAN.
 * Sister's sprite can be seen in many places throughout the mansion, often only momentarily and without Girl taking notice.
 * There is one instance where Girl enters the entrance room and sees Sister walking into the library. Girl will question whether she saw correctly and remark that there is no way Sister would be at the mansion.