I think she should be charged with filing a false report and if convicted, serious fine to cover some of the cost of the resulting search and broohaha.
Fiance should be grateful for a second chance to NOT marry this whack-job.
Fox News reports that she had backed-out of wedding plans twice before with this guy. You'd think the family might have mentioned that instead of jumping to the conclusion that foul play was involved and playing it up to the cameras. Her close friends or family had to have known that something was fishy.
Given that both families are described as "prominent", I predict that this will just go away. Poor little rich girl...hopefully her trashed wedding plans will curtail her opportunities to reproduce.