Re: He who has no sin can cast the first stone...
I agree with a lot of what you are saying that it is not a simple matter of a few words could mean you end up liable, however in this case the fact she had told him to get back into his vehicle and continue the suicide or that she was telling her friends he was missing while telling him to buy the mobile generator... I think it will be quite clear that she had a direct hand in what happened and was blatantly trying to cover her own tracks. Theres a difference between "F*** off and die" and something so cold and calculated to also have had a dry run at things.