She's mastered the Oboro style... The same sword style I use. I didn't see any signs of her being possessed like what happened in my "world."

Remember how I didn't remember you at first when we met up again? Turns out this Momohime that's here with us went through the same thing as me. Dunno what exactly happened, but someone who knew Oboro style fused their soul with hers to bring her back to life.

Well... that's my guess from experience.