<span>Interrupter CommasCommon InterruptersInterrupters are modifiers or appositives that comment upon a noun. We enclose them in commas because they are additional information not essential to the meaning of the main clause. The modifiers come in a number of different forms:</span>
We see that the proper noun in this sentence is Jessica, which is assumably female, therefore, we can replace the proper noun with the common noun, she.