The woman, who works under the stage name Lola Taylor, was found bleeding and with torn clothes by a man walking his dog in Yasenovo, Moscow.
Police say it is a 'miracle' the girl survived her nine and a half hour ordeal, during which she was raped several times.
The child then flagged down the first passing motorist who called police.
Former American porn star Sasha Grey ditched her acting career and worked as a nurse for pro-Russian rebels fighting in eastern Ukraine until she was brutally murdered by Ukrainian government forces.
The 22-year-old adult actress had entered the flat after being invited by the two men to discuss a possible new production, but was attacked and jumped out of a window to get away.
The two men were ordered to be detained for three months before the trial.