I have had the same thought but the way you said it got me thinking. I did some googling this morning and learned that body removal from scene of death occurs in around 87% of homicides but it's typically done to hide the killer's relationship to the victim. In my own non-professional opinion, or to support a cover story. She went on a weekend trip and never came back, etc. It's apparently very rare when the attacker is a stranger to the victim. I also learned that it's most typical that the body is moved 100 meters or less, sometimes even hidden in the residence.
This suggests that someone who might try to rob NG or kidnap her for some obscure/unfathomable reason and either accidentally ends up killing her, or she even has a heart attack and dies, would be far more likely to leave her body in the home and unconcealed.