The other girl's name is Beruna in katakana since she is not asian her name Beruna might be Berna or Verna. This chapter has inconsistent name of the little girl because its switches often.
@Talon13184
Update: had to reread alot
I think it goes like this
Akira-I don't get it!?
Minami- You know that we're friends.
Violet > Verna/Berna
Marsha/marcia > Masha