LE needs to investigate the man who was ID'd as being the texting, calling, hanger- on at the funeral home, last to leave, etc., for possible unsolved abduction/murders, IMO.
I keep thinking that he may be a killer who hasn't been caught yet.
Remember- Ted Bundy committed necrophilic acts and a great deal of grooming on his dead victims, even when it meant hiking into rough terrain. The last professional discussion which I am aware of on Bundy said that this type of necrophilia is extremely rare. ( I don't know what type of necrophilia wouldn't be rare, actually) but this was a Bundy-specific article discussing the enormous risks he took to be involved with the bodies of his dead victims, to the point of activity with the body until animals had eaten the soft tissue..Some had already been decapitated.
There were a couple of other necrophiliac persons we know to be serial killers mentioned as a group, briefly. I know Jeffrey Dahmer, Gary Ridgway, and Ed Gein were on the list, and in just the 20th century, there have to be more.
Point being, the man who did this is a very sick person and if he has no problem with unlawfully taking and most likely abusing Ms. Mott's corpse, he may have spent extended time with other corpses-- possibly women that he killed and " kept".