"Brilliant. So you know WHAT they are, but not where, or what to do about them. Since nothing we've tried so far has done a damned thing." Except drive Ron away, which was probably for the best, since Harry had been about to kill him anyway, but still. He was worried about him, when he could think straight enough to worry about anything.
"No, we're eventually probably going to freeze to death or have death eaters find us. And STILL not have made a dent." Not for lack of trying on either of their parts. But Harry didn't have the first idea what to do anymore, and it was hard to think at all straight about it anymore.