Yeah, This. Some may disagree with me here but imo, If nobody seemed to believe you, thats their loss cause for all they know, you could be lying to them. Later on when bad things really do happen, the rest of the main six would realize that you were right about what was going to happen after all then come crawling back to you. For me, I'd temporaily hold a grudge for not believing in her. But yeah, either this or you got to go the hard way and show any kind of evidence you may have in order to get people to believe your accusations.
But this is just my point of view on it.