More of the same old unimaginative thinking, that she must have some connection to some Time Lord or other even though her particular kind of death and resurrection is clearly very different from what Time Lords do. She's River! She's Romana! She's an inexplicably incestuous Susan! She's the Master's niece! She's the Rani! She's the Meddling Monk! She's Chancellor Goth back for sexy revenge!
Can't anyone come up with a theory that isn't Gallifrey-related? Something actually creative for a change?