I know this is not game related, but I have to correct you here. Rhea didn't sub out of the weeb game. She played until she was lynched. It's because after Lara dies, though she reincarnates, the same player can't come back. This time a different player becomes Lara. Rhea never planned on subbing out of Weeb.
Anyway, back to the game. The only way to decide the matter between Tris and Luthon, if no one comes out to say that they buss drove or anything is to lynch one of them.