Hermione thought over what Malfoy just offered. What was the catch? She hadn't survived in their world as long as she had by being foolish and overly trusting. A Death Eater didn't simply give out information because they were asked nicely. There had to be something in it for Malfoy, something worth risking Antonin's wrath. If he ever learned that the tracker had a method to find his estranged wife whenever he desired and he didn't share that knowledge, he'd be in serious trouble.