[1] She is a multiple-time Kazakhstan champion in all backstroke distances, and holds two titles at the Asian Age Group Championships.

Prilepa qualified for the women's 100 m backstroke, as Kazakhstan's youngest swimmer (aged 14), at the 2004 Summer Olympics in Athens.

She cleared a FINA B-standard entry time of 1:05.43 from the Kazakhstan Open Championships in Almaty.

[2] She challenged seven other swimmers in heat two, including Uzbekistan's Olga Gnedovskaya, who shared the same age with Prilepa.

She raced to seventh place by a 3.18-second margin behind winner Kiera Aitken of Bermuda in 1:07.55.