His two right hand men had killed enough members of the Pack over the last day that they were certain that Hermione wasn’t being held there. So they were going to follow the plan that he’d already established. They’d block the exits and then set the place on fire, eliminating everyone loyal to Greyback in one blow. If things went Theo’s way then Greyback wouldn’t even know before Theo figured out where this fucking Dark Lord was hiding out.