Valeriya Fedorovich was 19 in The Dyatlov Pass Incident when she played the character 'Alya (20 years)'.
That was over 11 years ago in 2013.
This was her first recorded movie acting credit (although may not technically be her first actual acting role).
Today she is 31, and has starred in 8 movies in total, 7 of those since The Dyatlov Pass Incident was released.
In The Dyatlov Pass Incident, I think Valeriya Fedorovich looks: