Who's Al Nahyan, UAE royal who passed out in London after 'cocaine binge'?

Mahrah Al Nahyan, a 32-year-old member of Abu Dhabi's ruling family through marriage, was found unconscious on a London street in June after a "cocaine binge". A three-year-old child she was looking after was playing barefoot nearby. She's associated with Al Nahyan family, which rules Abu Dhabi. It is among world's wealthiest dynasties, with an estimated fortune of $300 billion.