But the International Olympic Committee's announcement on Tuesday that Russian athletes who are individually screened by world athletics governing body, the IAAF, might be allowed to compete in Rio under Russia's flag has revived the two-time Olympic champion's Rio dreams.
"Today I have to admit that deep down there is hope," Isinbayeva told reporters after winning the Russian championship in Cheboksary with a 4.90-metre vault. "It hasn't died completely."
Isinbayeva missed but celebrated her national championship victory with a backflip on the landing area in what was her first official competition since 2013 due to giving birth to a daughter in 2014.
Russia's pole vault tsarina had said that Tuesday's national championship final in Cheboksary -- a Volga port city some 650 kilometres east of Moscow -- would be the last track and field meet of her professional career if she could not compete in Rio.
The IAAF left the door ajar for a few clean Russian athletes to compete in Rio as neutrals -- a prospect Isinbayeva rejected, saying she would only compete under her country's flag.
But the IOC's announcement might now give Isinbayeva a loophole to end her career on the world stage after all.
"Now it means that the end of my career, I hope, will be in Rio," she said. "I was desperate yesterday, but I'm very optimistic today.
