Complex sentence: She voiced several characters in the animated series "The Simpsons" from 1999 until 2002, including Maude Flanders, Helen Lovejoy, Miss Hoover, and others, after the original actress for these characters departed from the show.
Split into simpler sentences: She voiced several characters in the animated series "The Simpsons" from 1999 until 2002, including Maude Flanders, Helen Lovejoy, Miss Hoover, and others. She was hired after the original actress for these characters departed from the show.