A gymnastics fan. Not Ksenia Afanasyeva, just a fan.
Mustafina moonlighting as a rhythmic? Poor girl. I hate to think what her state coach might do to her when she finds out she has two jobs. lol...From what I hear the translation is correct, maybe a tad too literal but correct nonetheless. Artistic gymnastics is called 'rhythmic' gymnastics in Russia, and rhythmic gymnastics is 'artistic' gymnastics.