Lawsuits aren't about morality though except for the moral code we have codified in law. Beyond that, people are allowed to hold different moral beliefs. Look at the debates over the morality of abortion, for example. Plus, the question starts with assumptions, namely that the L's knew G was dead, they knew where her body was, and they knew her corpse might be greatly harmed where it was. In the filing, evidence that they knew all of that is missing. We'll see what is presented in court. I'd also like to know why the L's would have had a
legal duty to the P's.
It is interesting the filing states the couple got engaged in July 2020. NS has been quoted as saying the engagement had been called off.
Mother of missing Gabby Petito says boyfriend and his family IGNORED her desperate texts | Daily Mail Online
But even if they were still engaged, I don't see how that changes the L's legal responsibility.
JMO