I think KB was disposed by KK in Idaho. She claims she told PF she couldn't do it because of expired tags but even if she was stopped for expired tags, LE wouldn't search the car.
I don't believe PF would take the body home to burn in front of his mother because his brother is in LE and the risk was too great. Plus, his mother seems to get along with bro just fine.
JMO
Trial testimony begins here:
CO - CO - Kelsey Berreth, 29, Woodland Park, Media, Maps and Timelines *NO DISCUSSION*
Some highlights:
Patrick Frazee murder trial: Opening statements
At a later date, Kenney would bring investigators back to that exact spot, which had been covered in dirt, and when uncovered, would show
scorch marks and a possible human tooth fragment, Viehman said.
NOV 1, 2019
Frazee murder trial opens with focus on defendant's mistress
Defending Kenney, Viehman said much of the evidence in the case, including the area of his Florissant ranch where authorities say Frazee burned Berreth’s remains, wouldn’t have been found without her assistance.
When investigators dug into the burn scar, they found evidence of accelerants and a possible human tooth, Viehman said.
Jakob Rodgers on Twitter
Krystal Lee also described in the video the items she took from #PatrickFrazee's house & burned in the fire, which included stuffed animals -- a large white horse among them -- as well as what she said may have been a Bible & children's building blocks. #KelseyBerreth @csgazette
Sam Kraemer on Twitter
She also points out different but identical black totes on the Frazee Ranch, as well as a gas can she thinks he used for the fire.
The identical tote & gas can were entered as evidence and physically brought into court. @KOAA #KelseyBerreth #PatrickFrazee #KrystalKenney
12:15 PM - 7 Nov 2019
Jakob Rodgers @JakobRodgers
The two young men also testified that they helped #PatrickFrazee dispose of a metal trough that prosecutors say Frazee used to burn
#KelseyBerreth's body. Frazee never told them anything other than wood and deer or elk antlers were burned in the fire.
@csgazette
4:39 PM - 7 Nov 2019
Jakob Rodgers @JakobRodgers
UPDATE: Two young men, at least one of them a teenager, testify at the
#PatrickFrazee trial that they unwittingly helped
cover up a burn area at Frazee's ranch, where prosecutors say
#KelseyBerreth's body was burned.
@csgazette
4:38 PM - 7 Nov 2019
See how KK's testimony is corroborated by physical evidence and testimony from other witnesses? Cool, huh? And, that's just after Day 5. 

#JUSTICEFORKELSEY!
THIS PROSECUTION ROCKS! 