Her crime? Failing to register as a foreign agent as all Russian media now has to in the states. Journalists.
If she had registered, she would still be doing what she was doing. A gun nut, she sought to weaken Russian laws. Everything she did was in the open. No laws broken except failing to register. Her "confession" came as a plea bargin after months of harsh incarseration.
After slandering her as a Bond "honey pot" spy, she is now locked away so Americans can be safe for another 9 months at not minor expense.
Why not just deport her?