She would have run into her, but Kitty reacted first and phased through the red-haired girl before that could happen. "Nah, it's ok," she said, turning around. "I'm stealthy, like ninja... You leavin?"
Kitty gave a little pout about Jean leaving the room. "I understand... I come into a room and everyone leaves..." She gave a smile at the end. She had no issue with Jean leaving, but she did enjoy her company.