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Simp created a topic of Kill the Villainess

There were a couple things that confused me tbh
1. So why did she end up killing the former empress and the emperor? She said it was so she could die but didn't she just have to kill Helena in order for it to work?
2. What did she give the witch that made her like so her so much? The witch said she bc of her she knew she needed to make a new God but I didn't get how she got to that point.

Overall a good read but I can't help but feel there were some plotholes so I'd appreciate clarification