Just a quick little vidya.
19 year old Catie posts this explanation video on July 21, 2011. Subtitles and improved audio version here.
So Catie had to explain that she is acting out characters created by her. Boxxy saying that Svetlana or Catie looks like her but isn’t really her, in a sense, isn’t entirely false because Catie had to say she is not Boxxy, being that Boxxy was a made-up character and Catie is only the actor.