Final answer:
Mrs. O'Neill is interested in Selene because of her remarkable beauty and captivating presence.
Step-by-step explanation:
Mrs. O'Neill is so interested in Selene because of her remarkable beauty and captivating presence. In the various texts provided, Selene is described as having angelic blue eyes, surpassing beauty, and an irresistible charm. Her appearance and demeanor make her stand out and attract the attention of those around her, including Mrs. O'Neill. This fascination with Selene stems from her extraordinary qualities that set her apart from others.