She was willing to let her fiance become a prime suspect. She was willing to ruin the travel plans of the wedding guests. She was willing to allow all those who had made massive expenditures for the wedding to just eat them.
I don't know how she can show her face in town ever again. Someone this narcissistic might be in need of a mental institution. She's definitely in need of some consequences for her evil action.
The media assault she is going to get upon arrival back in Georgia may be consequences enough.