Hmm... This is hard. Heroine does seem pretty sincere, but at the same time I know she is good at this game. If either Thar is lying or the information that he received last night is false, I simply cannot understand why they would choose to target Heroine. Because of this I highly doubt the Mafia is behind this. To me there are two possibilities to this: Either Heroine is indeed Mafia, as Thar and his message says, or Thar/the person who messaged Thar is a Lyncher. For the time being though, I am the most inclined to think that Heroine is Mafia, so I will keep my vote for now.