Who is who- Part 3

Penny couldn't believe that the black witch or witches were killing people without any tact. Not even half a day had been passed and the count of people had been reduced to more than half in the forest. 

"How are they killing people?" asked Sister Jera, "We haven't heard a single clash of sound or noise during their time of death, "Did you smell any other witches?" the girl looked hopeful.

Sally twisted her lips to say, "There was one more person in the crowd though it was hard to tell who it was coming from."

The first confirmation was the deaths, and the second confirmation was that apart from Penny and Jera, there was one more witch who was not on their side. 

Another confirmation was that the council had sent a vampiress to keep an eye which meant it wasn't just Penny and Jera who knew about the involvement of the witches but also this woman named Sally.