Premise: Isabelle Guérin (born 1961) is a French ballet dancer. She was a member of the Paris Opera Ballet from 1978. In 1985, she received the title of étoile from Rudolf Nureyev. John Rockwell has described Guérin and Laurent Hilaire as "two of the Opera Ballet's greatest stars". She danced classical and modern repertoires until her retirement in 2001.
Hypothesis: Isabelle thought a lot about retiring before 2001.