Since the takeover of the Ministry and their establishment of Thicknesse as the new Minister, Rodolphus had fallen in to a rut - then the sanction came to begin building the backbone of this new group to act out where he and his brothers could not, and he had a mission again.
They had the blood status of everyone in the Ministry, and personnel reports suggested that this Rackharrow would be a good candidate. He had found out that she was a woman, and reconsidered, but one look at his wife had reminded him just how intensely devoted such women could be.
And so, when the halls had begun to clear, he took pleasure in the fact that he could walk without a mask in this place. He was recognized, and no one did a damn thing about it. By the time he found her, he was smirking in glee at the terrified glances from some of them. He ought to take a little tour of the Auror's offices - let them see how useless they were now.
As she came down the hallway, he stepped into her path to block it.