Complex sentence: Working as an intern in the contest office answering telephones, getting coffee, etc., the judges convinced her to audition and was the only actress of 2000 who auditioned that was picked by Mr. Bernstein for representation.
Split into simpler sentences: Working as an office intern in the contest office, the judges convinced her to audition. She was the only actress of 2000 who auditioned that was picked by Mr. Bernstein for representation.