Silvie - foreigner friends only.

I’ve noticed Silvie only hangs out and works with other gaijin / foreigners. I think i’ve seen one Japanese guy at a party she threw, but i’m curious- why no Japanese female friends? I’m aware she doesn’t speak Japanese even though she has lived there for a decade, which I also find interesting. I know Japan is very homogenous, but I know there’s Japanese alt girls there that don’t fit the societal molds and aren’t uncomfortable having foreigner friends.

Thoughts?