Dang, sad news for the decedent and everyone else involved. How would you like to have been one of the divers who stumbled onto the accident? I guess her dive boat was near and looking, but we don't have any news yet?
I have made a lot of dumb mistakes, but I have survived to learn a few things. One of which: FIRST DIVE, EVERY TRIP - practice reg recovery, mask clearing, and weight dumping. I am always surprised at how much I fumble just reaching for the releases, but I always want the idea to be active in my emergency reactions. I think most deceased divers are found with weights still secure.