[She's going to have so many nicknames one day...]

Not back home, no...

I had sisters assigned here, before I turned eighteen. ... And Chibiusa-chan is kind of my little sister now...

[She'd been adopted as a big sister by Chibiusa, adopted even further into the family by her "cousin" Usagi, and then confirmed by her mother Serenity. She's all kinds of part of that family now.

Unfortunately, she seems a little sadder about the other sisters in question...]