Inuyasha was all about reconciling personal relationships with internal struggle. Yashahime will be no different.
Here are how things look:
Moroha
>genki, fiery, headstrong, cheerful, playful, independent
>a casual and non-self-aware femininity -- you could describe her as "all american"
>strong sense of pragmatism that is often overridden by a latent sense of justice
>despite her acceptance in the demon hunting society, she still feels like an outsider
>inwardly sad about growing up without her parents, despite them being legendary
>will sometimes lash out at those around her, and regret it
>unlike Inuyasha, she desperately wants to live up to her parents' legacy, but doesn't know how -- this is the root of her struggle
>dark horse most interesting character, because her struggle is the most relatable -- how do I come of age? how do I become the best me I can be? The best part is that all of this is bubbling beneath the surface. She's the protagonist, even though the plot isn't "about her"
>best girl
Towa
>tomboy, stubborn, justice-oriented, intense
>similar to moroha, highly pragmatic -- but unlike moroha, sees pragmatism as a means to achieve justice
>she will struggle to reconcile her newly acquired modern sensibilities with the specter of Sesshomaru's past, and sestuna's present -- how can she reconnect with her biological family (which doesn't even remember she exists) without abandoning the adoptive family she has grown to love?
>facially most interesting character, because her desire to reconnect with family will set up the whole adventure
Setsuna
>intense, no-nonsense, elegant, proud, dutiful
>lives to bring honor to her lineage and to herself
>she knows her place in the world, and holds it in high esteem, but not arrogantly
>the return of towa throws her worldview out of whack. If my memories have been stolen, then who am I?
>the most interesting character for contrarians, but interesting nonetheless