If I am not mistaken, grapple in D&D is decided with a grapple check of the attacker, versus the grapple check of the defender. And there were 6 guards outside the mill, one was shot to death, then eaten, four was gobbled up in the mill, and one ran away, leaving just the hidden people who soaked up Lexi's first sleep spell. Though, we probably would need to make a perception roll or something to find them.