"Oh do not fear, brother. You will know. And when I find him, he will be subjected to the same fate as Severus."
It made him think on another topic. "Is it any wonder that the tide has turned?" He was reluctant to admit that their struggle was not leading them to imminent glory. "If Draco was in with Severus, then it is not much of a stretch of the imagination to think he too was passing secrets to the Order."
No, Rodolphus would keep this fairly quiet, and then he would make certain Draco underwent... sufficient... behaviour modification. He would not be betraying them a second time.