Ron blanched; he wasn’t used to the harsher side of Remus, that kind of reaction was more commonly attributable to Sirius, "I just got fed up, alright? We weren’t making any progress. We didn’t know where to start looking for the other horcruxes, couldn’t figure out how to destroy the one we did have. We spent all our time hungry, camped out in the woods, doing nothing. I couldn’t take it anymore."