Like he said once, Merle doesn't take it terribly personally, having a gun pointed at him. He wouldn't expect any less from her, particularly under the circumstances. It'd be just as easy and probably smarter to let her be, but Merle likes getting a rise out of people and he's not passing up this chance. Besides... she's useful, and it's dumb as shit to leave over pride. Which is what it seems like to him, anyway.

"Sure you ain't," he answers mildly, shrugging. For all the world like he's out here by chance, though he's not trying to sell that story. She's not that stupid, it's not worth the effort. But coming on strong obviously doesn't convince her, even if, when pressed, she's more or less obedient. Merle doesn't really do delicate or persuasive. When it comes down to it he doesn't really have a good reason to be out here doing this.

"So, where are you goin?"