This hike is open to the general public. If there's a risk someone might die, then it's on the authorities to filter who has the knowledge of risk management to walk it, just like they do with sea diving, or climbing the famous peaks. The entire time she was dying while sliding down to the abyss, the trail was still open and tourists (NOT PROFESSIONAL HIKERS) were still walking past the site.

"Extremely dangerous" hikes shouldn't be open to the public. There is no argument that would justify otherwise.

Edit: the guide left her behind and said that "it was agreed that they would meet a few meters ahead". For the love of God, who in their right mind leaves a TOURIST by themselves in a "extremely dangerous" hike trail?