I did finally get a girl drop, Christmas Bunny. It was only because I was doing battle as part of the quest. I have decided I will only waste my battles to try to get a drop if I have multiple points. If I only have 1, I'm not saving it to wait for a drop battle. I would conservatively estimate that I have had approximately 200 battles against those various bosses with only one drop. That means I've could have had 400 normal battles and all the things that go with it that I don't get from trying to get a drop. What a waste for a .05% return.