She left a broken home on the Jersey Shore at 17 and came to New York City to work the nightclubs as a rhythm and blues singer. Now, at 22, she is the unwitting, and as yet unseen, star of the seamy drama that is the downfall of Gov. Eliot Spitzer of New York.

Kristen, the prostitute described in a federal affidavit as having had a rendezvous with Mr. Spitzer on Feb. 13 at the Mayflower Hotel in Washington, has spent the last few days in her ninth-floor apartment in the Flatiron district of Manhattan. On Monday, she made a brief appearance in federal court, where a lawyer was appointed to represent her. She is expected to be a witness in the case against four people charged with operating a prostitution ring called the Emperor’s Club V.I.P.

In a series of telephone interviews on Tuesday night, she said she had slept very little over the past week, with all the stress of the case.

“I just don’t want to be thought of as a monster,” the woman said as she told the tiniest tidbits of her story.