I dont think the producers would show a sneek peak showing a major character dead. It will be too obvious, yes that body looked like its Beth's size, but again it will be too obvious to show...
Another thing is that if its Beth, they dont burn their own, they always burry them.
Yes some spoilers have said that
Beth dies in the mid-season finale
but this epiosde isnt the MSF
Besides she was just added as a main character in the opening credits they cant kill her.
Unless she volunteerly asked to be killed to pursue her music career
