It didn't occur to him that summoning a field of deadly tentacles might be a little alarming to spring on someone who wasn't expecting it. He just assumed she'd somehow understand what was happening. Hive mind habits are hard to break.

"The mayor's estate. Larkin I think his name was. Very drunk, very .. in over his head and probably didn't grasp what was happening. But the abattoir was enormous, almost too big to fit beneath it, though thats where it seemed to be situated. The rest of the residence seemed normal enough. A study, banquet hall, storage closets. I didn't go in all the rooms but it seemed typical."

Don't ask why he was in a storage closet.