Here is a quote from Dan the Engineer. Not sure how useful it is to bring in MEG DIVER quotes.
No offense to Dantheengineer, but I think you have the situation backwards. MEG DIVER is an uninterested party who was present on the dive. Dantheengineer is receiving his third party information from employees of the dive shop. Dan's information is suspect in accuracy as the parties providing it are very interested in the perception and outcome of any investigation. In short, if there are conflicting statements, I'm leaning toward those of MEG DIVER to be the more accurate.
For example, MEG tells us that the rent-a-buddy DM realized the victim was 20' below her when one of the other divers signaled her to that effect. Dan's story would have us believe that the DM spontaneously and on her own realized the fact. That certainly sounds like a minor manipulation of the facts by omission in an attempt to make the DM seem a little more with it. The truth? Either could be true. I believe someone accused Dan of "padding" his narrative as well, so I'm not the only one who questions the completeness and filtering behind his information, again through no fault of his own.
With regard to the hiring of the DM, I am willing to believe that the DM was hired by the victim and her husband. He probably put up the credit card, so yeah, they both hired her. Now, I am also leaning toward believing that she was hired specifically to buddy with and watch the victim. Even Dan's story says that they held the boat:
The procurement for a private DM, is also said to be at the very last minute. To the extent that the boat was unable to leave until Mrs Wood returned from the dive shop having procured 3.
(By "3", he meant DM #3, there were two other DM/Instructors on the boat)
The above, combined with the undisputed fact the the husband, Mr. Wood, was diving with another friend as his buddy, really suggest that the DM in question was hired to act as a personal buddy to Mrs. Wood, not as a DM in the more traditional sense.
The post I made, upon which you commented, was specifically to call out some of the important facts that were disputed between the two accounts and to get clarity on them from either or both parties if they wanted to give more thought to those particular issues. I don't claim to have authoritative knowledge of any of the events, I'm just evaluating the various statements and trying to see where they intersect and where they contradict in order to get the clearest possible picture of the events. A week and 500 posts later, we still aren't quite there.
Also, we have four information sources here, not just two. We have MEG DIVER who was on the dive, but not a direct eye witness to the event. We have Dantheengineer who is a local and has been getting data from people at the dive shop, probably including those who were on this dive. We have danclem, the OP, who seems like he may have also been on the dive, but never really specified that. We haven't heard from danclem since the first few dozen posts. Finally, we have onlyhalcyon who claims to have been an eye witness to the event, but hasn't come back to tell us anything further after the initial post. There is definitely more information to be had.