That story is HERE.
Well, as you know, the Japanese media did not release her name to the public, per her parents wishes. I'm not the Japanese media, and I didn't get her parents request. The poor unfortunate 19-year-old girl's name is Tokumasu Ayano.
Anyhow... that photo up above shows Tokumasu-san a couple of minutes before her unfortunate tumble, and is considered the last photo taken of her alive. That's her in the red sweater standing up on the edge of the fence over-looking the Horseshoe Falls of Niagara Falls, the edge of which is actually just to her right.