The story with this girl in the photo is unclear to me. Igor Dyatlov and my relative Moses Axelrot were tohether in previous winker ski hike - and there were no girls with them as you say now. So this photo has another source.
Somehow, in Ivanov's photo archive, there are photos of a guy and a girl who have nothing to do with the Dyatlov group.
This is combined with the testimony of nurse Solter and orderly Savina from Ivdel that in addition to Kolmogorova there was another girl, and in total there were 11 corpses.
Also, Vera Belledir's father from Ivdel told her that in addition to the Dyatlov group, there was a search for the children of General Lelyushenko (a guy and a girl).
This looks like a made-up story, but it all seems true, given these unidentified photos.
I don't have an answer to this riddle yet.