The article doesn't give that information. Just that she worked as an "intern" for free starting after her sophomore year in college to try and get her foot in a door somewhere. But it was also in the era where phone books existed, so, 30+ years ago?

EDIT: "Intern" has a pretty strict legal definition. What she was doing was not interning; she was free labor. That's supposed to be illegal because it's exploitative. The regulations surrounding internships in general are often ignored, and companies get away with it because you will get blacklisted if you report them.