Modern cringey american slang isn't old outdated phrasing a vampire would be using considering she's 360± years old and it's Japan, not america
Scanlators who use american slang make me not happy (using kinder words here in lieu of explicit words) because you can just directly translate the Japanese and put in a translation note explaining it at the end
Not to mention there are readers who don't live in america
Australia, The United Kingdom and Europe exist, not just america