No, Suki's in charge

Suki whimpered for only a moment longer, then, with a snarl leapt at the taller girl. Cathy, surprised, wasn't ready for such an attack, and she was caught completely by flat footed. Her breath came out of her in a solid "oof" as the Asian girl's fist caught her in the stomach. Cathy fell backwards onto the bed, clutching her midsection and gasping in pain. She heard a click and looked up to see the door close. She was alone.

Cathy got up and hobbled to the door, trying to open it. She stared at it in dismay to discover it was locked. She went to the desk for the key, but it was gone. Cathy felt the first stirrings of panic when she heard a click again. Her head whipped over to stare at the door.

Who was it?