I don't think there is a comma.....
She is crying. The verb cry is both transitive and intrsitive. As "cry" is intransitive or there's no object in the sentence presented, you cannot change the sentence into the passive voice. Look at the following example in which the cry has been used as a transitive verb: The mother cried tears of joy when she found her child.
The first person Macbeth kills is Macdonwald
"I Am Prepared to Die" is the name given to the three-hour speech given by Nelson Mandela on 20 April 1964 from the dock of the defendant at the Rivonia Trial. The speech is so titled because it ends with the words "it is an ideal for which I am prepared to die".