Unsure what do to, as Cora knows the Chieftain and two of his lackeys are swing for the fence hoping to stumble on something that resembles Terrance or her. She decides to hold fast and wait to see what they do. If they come in she will attack if they stay out of the smoke. She hopes her companions will be here before the smoke fades, too engage them. So she draws her dagger and readies an alchemist fire and waits.
So if they do come in the alchemist fire will be for my attack of opportunity (as he enters my threat range) on the Chieftain. But I want to sneak attack one of his lackeys on my action from holding it last round. So I think I have the order mixed up but you get what I am saying.
17 = 12[d20]2[d6]1[d6]
Alchemist Fire Ranged Attack
27 = 17[d20]+10