Very sad outcome, though I'm glad she was found now rather than months later as happened with Julian Sands.
We may hear more about exactly where she was found and what they think happened, but here are some considerations. The Ski Hut Trail is far above the canyon that goes down to the multi-tier San Antonio Falls. I'd heard that her hat & camera bag were found closer to the falls, but it wasn't from a mainstream source so I couldn't mention it. It was also confusing why those items should be there but she wasn't.
She may have fallen into the canyon and gotten separated from her hat and bag during the fall. It's possible that the stream carried those items down the canyon, closer to the falls.
I had thought that if she fell into the canyon, that might've triggered an avalanche that buried her, or that she might've been covered by subsequent snowfall. Like
@RickshawFan, I wonder how she was missed earlier if she was NOT covered by snow. It does look complicated in that canyon, with lots of snow-covered trees on the slopes and over the stream, so maybe something shifted or maybe they missed her. Searchers may not searched the entire canyon due to the high avalanche risk.
We're told she was found in the "Upper San Antonio Falls" area. If that means "near the upper falls" rather than being a broad term used to describe the upper parts of the canyon, she would have been found further down the canyon than a point directly below her last known position. In that case, it's possible that she had turned back and fell from the trail on her way back. It's possible that the term is being broadly. I doubt that the stream could've carried her down the canyon, but who knows. (Finally, it's possible that she fell into the canyon, was still alive, and tried to make her way down it, becoming cliffed out as
@RickshawFan suggests. But I doubt that that heartbreaking scenario occurred. I don't think the searchers would've missed a moving person.)
JMO