Isabelle
That would make sense if she were part of some satanic ceremony.
Suddenly she can feel the shape of the dried blood on her forehead and just knows that it, too, is a pentagram. It is no longer a nice sensation and she wants to scream again, sure that her lungs are now capable of bringing the whole building down. But now she is unable to move a muscle, let alone scream. She finds that she can’t even blink, although her eyes are drying up and stinging quite badly.
There is a sudden loud electrical crackle. Sparks of electricity come from the points of the pentagram around her.
And then Isabelle knows no more.