I'm sure "evil hinata" is a twin.....or atleast a fortune teller.
This stunt just too risky if the real twins exist.
If both twins reveal themself then it's death for the evil hinata
If not the twins, then she is fortune teller and the one of the twins is that "first blood" guy.
Using her power she realize the "first blood" guy is the twins
Then she took disguise as a twins so the werewolf won't sniff her