Aw, Polina K didn't qualify for nationals?! That is such a bummer.
Here is the explanation:
Korobeynikova withdrew from her GP event, therefore did not get in automatically (those who attend GP event get spot automatically). She competed at two Russian Cup events and placed 8th and 3rd, so she did not have enough points to qualify but she is the first alternate.
hanca is being a bit diplomatic here. Korobeynikova did not withdraw from the GP's herself - it was the Federation that withdrew her entries because she did not do as well as they expected in her first Nationals qualifier (8th).
As
hanca pointed out, Polina K went on to get a podium in her second qualifier. But, the decision had already been made to send Gosviani to GP's instead, and it wouldn't have been fair on Nikol for the chance to be offered, and then whipped away.
So, it's the Federation's fault for not having enough faith in Polina K in the first place.
But, I'm totally biased, as I am a fan of Polina K!
CaroLiza_fan