I agree with u guys what u already said, its sad but needed.
Remember Liuba have been playing for Russia NT in big competitions since Atlanta 1996, and its really time for young stars to take over now. This will be the first olympics since Barcelona 1992 Russia will play without Liuba, and I guess its best for the future to get used to not rely on Liuba and try to create new legends/leaders instead. I dont think it will affect their play too much either, with Goncharova in attack and Estes in backrow, its not a big difference I think.
Oh I think their game will suffer. They ended up 1st in the WQG because the other teams were weak or playing bad. They were the powerhouse so it was expected to win. As for Liuba I think ger presence is very important. Both Goncharova and Estes are not so good receivers. Liuba made the difference. She is a fantastic player.