I also don’t think that this hero is khmer. The feature in this hero has nothing related to khmer culture at all. In her back story they said that she has inherited the blood of the great serpent which is a mythical sneak sea creature. a serpent is probably from Philippines (I’m not so sure about this but they have “The Bakunawa” which is a serpent that is related to this girl hero. Us Cambodia believes in Naga and yes both serpent and naga is a snake alike creatures. But since her story related to Kadita(from Indonesia) and Badang ( from Singapore) this hero is probably (From Philippines). IDKKK THIS IS JUST MY GUESSING DONT ATTACK ME. 🙏🏻