The scene with Ushiwakamaru was really nice. And I quite liked your take away from what she was saying :) Oh and most just call her Ushi or Ushiwaka for short haha.
This episode gave us more of a glimpse into Ishtar but also raises some questions. What was up with her and the sunlight? At first glance, the lack of sun seemed to have an effect on her but then at the end, we can clearly see her blast away those spirits during the night. So there must be more to it? And then there was the way she reacted when she awoke to being tied up. Obviously more will be revealed as the story progresses :)