Yana Tamocheva became lost while picking berries with her mother in Krasnoyarsk region.
Wife pleaded with rescuers to search for the businessman saying: 'We feel that our man is dying.’
A desperate rescue mission saved four people - but up to 24 are feared dead in the air tragedy in the Sakha Republic.
New statistics on Saturday showed the vast scale of the human effort in Russia to halt a natural disaster that has destroyed swathes of woodland and taiga.
Spaso-Zashiverskaya has survived wars, permafrost, and a smallpox outbreak that wiped out its congregation.
Most fires will not be extinguished, with major cities polluted by fumes.
Mysterious 'gigantic' hole in remote region spotted by helicopters over gas-rich Yamal peninsula.