Submarine, I don't think it will work. Probably the only chance is that she would show her remorse on what she did in the trial, then the appeal court might give some clemency for her. After that, she will serve the sentence without appeling to the final court, wating for pardon, then she might have a chance to have her time halved again. But as long as she is shrained as a convicned political criminal she would not dare to do that.