I'm asking this because of her incredible supernatural powers over water amongst other things.
Answers (1)
https :// villains . fandom . com/wiki/Natasha_Rimsky
Haven't watched it, but claimed to be a ghost and her powers are listed on the page.
Based on a japanese film, so if there's any relation to shinto it's kinda par for the course when it comes to yokai (or kami to a greater extent), as far as I'm aware. But then an independent or more western understanding of the spirit world (eg patrick swayze's ghost) isn't too far off either. At any rate, whilst definitions may vary by fiction, "god" usually indicates a much greater scale of control than domestic.