Geekypress
Considering how her story is structured, I think it would make sense if she had three themes- each matching where she currently is in the story and how it affects her. I wanted all of the titles to be somewhat earthquake-themed as it seems it was the main inspiration for this character.
Act I - "When my world collapses"- I imagine it would be a mostly orchestral song, without lyrics, with drums mirroring sounds of an earthquake. I think it would be loud and bold, especially at the beginning, slowly transforming into a sad and melancholic sound once the drums go quiet.
Act II- "Ground failure" or "Landslide"- I think a fast paced, slightly chaotic (again instrumental) song with mostly drums, violin and piano could be a good match for this point in her story.
Act III- "Building clay temples"- A slower song, which at the same time would the only theme of hers with lyrics. I think the lyrics could tell the story of how the earthquake caused the landslide, what it destroyed and how everything was slowly rebuilt in the affected area, using what was left. The melody could have elements of the previous two themes, merged into a new song with a hopeful sound and message.
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I would be so happy if you could come up with an idea either for Jiro or Iris