The Sapphire Chruch Phantom

A Girl in an unfamiliar place. She finds a run-downed church and opens the door. There is an indoor balcony that looks empty but it's too far up to see. She walks up to a door and sees a beautiful cat . The cat had a beautiful white coat and black spots, and bright sapphire eyes. It had to be her cat. That's when the Girl notice movement it the corner of her eye. It came from the balcony! Was it another cat or a person?