>>544494010
She uses the standard polite form or -masu conjugation when speaking to Ashur and Erpin. This is how you talk to senpais, teachers, acquaintances, on the news, etc, but not as intense as customers, big bosses, and formal situations (keigo). Masu/desu might sound super polite to you because plain form is far more common in anime and streaming, but it does show a character is mindful of manners. For example Butter is friends with Kommy and uses plain form with her instead. I heard gook also has an honorific system and that makes translating from nip pretty easy for them.