A few months ago Steve Bing a film director worth half a billy just jumped to his death.I would not be quick to say suicide doesn't seem like a well off celeb would want a suicide that way tbh.
Steve Bing Dead: Financier, Philanthropist Jumped From Building, Officials Say – Deadline
Also Rivera has somewhat alluded to her having some issues:
Naya Rivera Coming Out? Watch Actress Respond To Bisexual Comment On ‘The View’ [VIDEO]

people usually jump off buildings or bridges when they commit dat. Unless she got an anchor on her leg or something of the sort im inclined to believe it was accidental.