Oh, ok, new question then! I think we all got confused somewhere in there. I'll take a stab at it. Our hero the Asawira is in Difficult Terrain and prone. He declares Dodge, remaining prone. We know from ijw's answer above that Prone halves the base Dodge movement and also the Asawira's bonus Dodge movement. We don't have an answer from ijw on how Difficult Terrain affects Dodge, but we have Solkan's convincing argument that the -1" does not apply to Dodge. It follows that the Asawira Dodges 2". His usual 4" Dodge movement is halved by being Prone, but is unaffected by being in Difficult Terrain. No, that's the one that ijw has answered. It's 2". 2/2 + 2/2 because base movement and bonus movement are both halved by Prone.