I'm thinking that the car may be a very rich source of evidence. He had to transport her to the dump site by vehicle if she was killed at home. I'm looking for body fluids in the car or carpet fibers on her clothing or something that would lead to a conclusion that her body was in the vehicle.
Obviously since it was her vehicle too, this may not prove much, but if the fibers were clumped in an area where her body rested, or if there was her urine in the back or something similar, that could just be the defining evidence.
Obviously since it was her vehicle too, this may not prove much, but if the fibers were clumped in an area where her body rested, or if there was her urine in the back or something similar, that could just be the defining evidence.