Sally explained her distrust to 
Nerwen in post 
1609 and 
1616.
Basicly she starts suspecting 
Nerwen because she belives that 
Wolf-Nerwen wold make a kill like 
McCaber, the rest was based on 
Nerwen's case against her. 
I do see how 
Nerwen' case could seem like a wolf twisting things and pulling strings to get a person lynched, but it is always hard to determin. . . anyways I think we should at least consider 
Nerwen as a suspect.