In terms of strategy for getting gold, I found the best method for me was to stay on the right bank (the side of edo that has the well where you rest up). What I did was to run round and round the block by the bridge (each circuit nets you three spawns of enemies). When I was down to about 1/10th power, I would run to the well to regenerate my health. As I said in the forum, you can do this a maximum of three times. The pace of the respawns quickens after 15 minutes or so, so you may end up just running back and forth in an "L" around the block at that point. Chiba is relentless, but if you are decent at timing your strikes, you can kill the first 9 iterations easily. The last one is rough (died on her several times) because she blocks like crazy and is relentless on her attack. I ended up getting lucky on her with a nearly full health bar, but if you are good at timing your attack, I think you get it off just before she swings and you can own her.