Where am I? (Hades)

Athena felt a throbbing pain in her head. She groaned as she opened her eyes and was met with a bright light. Was she in Heaven? She slowly turned her head and saw people walking around. So she obviously wasnt dead. She tried to sit up but quickly regretted it as she was met with dizziness and nausea. So she lied back down. She cleared her throat a bit before speaking "Excuse me... where am I?" She asked the woman with the brown hair near her. The woman answered her telling her she was in the hospital wing at a place called Hogwarts. She had no idea where that was or why she would be in a hospital. The lady then spoke again "We have sent for Mr Gaunt. He should be here soon." Then she left. Athena wrinkled her nose a bit. Who was Mr gaunt?