It was said on the phone that they were keeping on the down low and because of this the pig killers would have nobody on the butcher slab right now except Portia.The second point is the new pig i guess her name is Denise dosen’t seem to be showing the signs of a beaten victim who decided to end her life by the butcher hand but a complete victim who was taken unaware.
Just because someone is missing we assume they are dead there are many different scenarios that could have happened.