Don't feel bad, michelle j. It's almost impossible not to laugh at that picture.
In an effort to answer my own question about whether Daisy got hurt, I found this
Why did Margrethe's heir Frederik preside at the royal New Year reception for government ministers at the end of 2001?
She was ill. Margrethe was ill, having fallen and cracked two ribs. Her husband Prince Henrik was offended that he was not asked to preside instead.
I assume it was the same fall. Raise your hand if you're surprised that Henrik felt slighted.
ETA: Apparently, it wasn't
the same fall. The one in the picture happened in 1974, according to this thread
started by PeDe earlier this year.
As an added bonus, there's video
. I have to say, it's most impressive the way Daisy managed to keep her hat on during the fall. No wonder Fred thought she could give Mary tips.