No doubt he would double his efforts to find her again. She was thankful to know that he was unable to track his followers through their Marks. The rumor that he could find any of them whenever he wished kept the simpleminded in line. They never strayed very far. Her former best friend was a perfect example. But, Hermione was smarter. If a coward like Igor Karkaroff could elude his fate for an entire year, there was simply no way that a tracking spell was in the Mark. He would've been found within hours.