Her anti-Putin bandmate Maria Alyokhina was freed earlier from a jail west of the Urals.
The boy’s parents went to gather berries 3 days ago, and left him to rest inside a locked car.
He landed onto the track in minus 40C wearing only a T-shirt, shorts and slippers. He had left his compartment to go for a cigarette.
His career with the St Louis Blues was earlier delayed because of the NHL lockout but the impact of the 21 year old has been dramatic.
Three cities east of the Urals are in the top ten for a new survey of national contentment.