Complex sentence: Kelvin wakes to find Rheya dead, having committed suicide by drinking liquid oxygen and, in front of Gordon and Snow, she restores to'life' and it is revealed that other manifestations who have'died' have done the same.
Split into simpler sentences: Kelvin wakes to find Rheya dead, having committed suicide by drinking liquid oxygen. But she quickly self-resurrects, and it is revealed that other manifestations who have'died' have done the same.