I will say this: if the last time I saw my DH was at 11:30pm and the next morning he was no where to be found, bu his car was there, as was the dog, his wallet, his cell phone etc., etc. and he hadn't come to bed (obvious - yes?) then I would not be going off somewhere until after noon.
Doesn't everyone wake up when their SO gets in or out of bed? Maybe not, but It wakes me every time. Every. Dang. Time.
What about the door alarms? Do they have them? Every door in my house 'bing bongs' when it is opened. You can't miss it. What about security cameras? Was the house alarm system turned on set before she went to bed?
There is no mention of a pistol missing or that he had access to a massive amount of narcotic RX's.
Everyone gets stressed at work but they don't kill themselves over it, they get a different job - unless they are mentally unstable or there are tons of other issues bearing down on them.
An acquaintance of mine went out for a routine morning jog and blew his brains out. There were issues at home. Everyone knew about them. So what was going on here?