Marguerite appeared in her first play at age 16.
Marguerite graduated at the Coronado High School in Scottsdale, Arizona, then moved on to claim her Bachelor of Fine Arts at the University of Southern California.
She studied acting at the Royal Academy of Dramatic Art in London, which is one of the most prestigious drama schools in the world.
Many people say that she looks like Mary Stuart Masterson.
She is heard on the soundtrack to Seinfeld. She performed "It's a Most Unusual Day."
Her first Hollywood appearance was in "Seinfeld" as Karen. The episode title was "The Chaperone."
Marguerite made her big first appearance in The Days, as Abby Day.
She has appeared in many Broadway and off-Broadway productions.
Vocally, she can be heard on the Broadway Soundtracks for "Annie Warbucks" and "Jane Eyre" and the off-Broadway soundtracks for "Weird Romance" "No Way to Treat a Lady" and "A...My Name Will Always be Alice".