I was fooled on the plot twist until that the Demon found the Mountain dude dead in the pool of blood. When that happen, I was like
She killed him. Oh snap, maybe she is a killer too. Because the Demon didn't look he killed him.
This movie felt alot like "Kill Bill" for some reason. Loved how they played on "Believe All Women" concept as well. Loved how they played on silence as well as dialogue.
But some stuff was just too convenient, When she sprayed the Demon and he just happened to fall towards her.