It was a bad decision for Amy and all of the elite New York refugees to try a 14 day turn around...
I blame the agents who do not understand the sport, but only the money of the sport.
You have to realize that:
a) Amy was hardly even prepared for NYC and probably would have dnf'd there too. You can't do an abbreviated marathon buildup.
b) It has likely been over a month since Hastings, Burla, and Nelson did any marathon specific work. Their coaches should have know better.
Yokohama was the worst choice of all.
One week later? Not ideal, but closer.
Two weeks? A complete dead spot.
One month? Much, much better.
Two months or more? Best option.