There's no question that the fire affected the creature, but it is not helpless. It has just stunned Sofia from two hexes away, even as it hugs the wall near the books.
Sofia, I will need a d20 from you, as the front of your robe (or whatever you are wearing on your upper body) is attacked.
Enrico and Kismet both have torches lit and can act as they will. Here is the present position of the party: