Russian variations on names you'd see in english include
Yulia -> Julia (this is because french people changed how "J" is pronounced)
Vasily ->Basil (The changing pronounciation of the greek letter "Beta" from "b" to "v")
Varvara -> Barbara (also has to do with the letter beta)
Considering Russia is near Japan, I'm guessing she's Russian in spite of the Ukrainian origin of her family name.