I believe he called her Carol both times.
My perception was the house had been seized by the Federal Govt. because the truth had come out that WW was Heisenburg the Meth drug lord of the southwest. Therefore, there must be a warrant out for his arrest(similar to Whitey Bulger).
Also, that WW had been on the run for some time. Remember the first scene from the first half of this season? WW was driving a Volvo with NH plates with the “Live Free or Die” state motto? He had a different vehicle in this foreshadowing scene at his old house. He switched cars.
yeah- you just reminded me of the cars- At eh foreshadowing scene he was driving a beat up old Cadillac, I think- that was a different car for him and I didn’t notice the plates