Or pulling a dahmer and using acid then pouring whatever remained down the tub drain
I think this was implied. JF is a fat slob, I can't imagine him engaging in physical activity to save his life. '10/10' suspects JF precured a specialist on the dark-web to dispose of the body, which I think unlikely: A: it would cost more than hiring a hitman. B: His narcissism would make him believe only JF could do it.
I think JF really hurt Elora during one of his domestic violence rounds, he realised she would have to be hospitalised, so he murdered her, then abused Elora's remains so she could be safely disposed of without leaving identifying factors like teeth, DNA or intact human bones.
I know the last part seems beyond the pale, but bare with me: if JF were to convert his Families kitchen into a makeshift laboratory, if JF had access to an open top freezer, it is well within the realms of possibility that he could cordon off a room from his toddler and infant children and slowly reduce his victim over a period of 3 weeks to biological *matter* (sorry, my stomach turned too by typing this out). He could dispose of the evidence using the municipal waste system, but I think he would feel vainglory by doing it in a clever unintuitive way.
Or maybe JF just throttled Elora and left her in a shallow grave somewhere on Prince Edward Island and the Mounties are too busy keeping order with 80,000 a year Indian migrants to provide a satisfactory man search for a missing woman with a past history of eccentric behaviours, and a family who are unconcerned with their "so called" flesh and blood.
I think in the 1990s, if JF did this, his home would be torn apart, his family and children questioned by specialists, they would pull up the shore-block from his house's sewerage line and examine it for particles of human bone, they would track the serial numbers of the tires on his cars, the shoes on his feet and the quality control serial codes on his freshly purchased drywall.
JF seethes and whines about electronic tracking. . . .I think he only got away with this because of the utter disfunction of 2025 Canada (no offense Canadians, everywhere is crap too)