Mim is from a large middle class, academic and artistic family. She has three older siblings, sisters Angela, Corinne and brother Andrew, and ten years younger sister, Bethany. The family lived near Sassaquin pond in the north end of New Bedford until, one by one, each of the older Paquin children left for college. Eventually Pierre & Leslie decided to retire to Cape Cod where they would raise Mim's younger sister.

Mim was 4 years old when she first performed onstage in the musical The King and I, a show that her parents co-directed at the high school where her father taught, Fairhaven High School. Throughout elementary school Mim performed in many local theatrical productions and choirs. Mim attended New Bedford High School (student population of over 3,200) where she performed leading roles and solos in a great number of theater productions, choral concerts and vocal competitions. During her time in high school, the drama club won two Moss Hart Awards and the choruses won first-place in the North American Music Conferences. Mim earned a reputation as being the best of the best, when she auditioned for a jury of her peers and educators and won the one soprano solo at Massachusetts All-State Music festival. During high school, Mim began to teach herself how to play piano and guitar. When Mim was 17 years old, she was hired by her father to produce four, hour-long, classical music programs, and used her voice over talents on station commercials broadcast on WFCC Cape Cod classical radio station, for which she and her father won first place Massachusetts Broadcasters Award and Mim's programs received 4th place Honorable Mentions. Mim received scholarship offers to a number of colleges in New England, but had to work full-time after high school as an administrative assistant saving her money in hopes to be able to afford to attend college. Mim auditioned for, won a full-scholarship to, and attended The Boston Conservatory, where she majored in Musical Theater, but dropped out after freshman year due to financial struggles. In order to continue acting and songwriting, Mim worked various corporate jobs supporting herself paying for her artistic training- it was during that time when Mim studied acting with Michael Shurtleff and her original music and video-plays were featured on the FOX New England broadcast "Think Twice, It's Your Life."

After earning a living working full-time in corporate jobs in Boston, Mim moved to New York City in 1999 to pursue acting. Upon moving, Mim reconnected with life-long friend and performer, Jodie Bentley. Bentley was casting an off-off Broadway production the Neil Simon stage play: The Odd Couple (female version), Mim was cast as the supporting character, Mickey the Cop a performance for which Backstage, NY described her as an actress with "noteworthy comedic turns, with a heart of gold." Mim also scored music for the show that played throughout scene changes.

While in NYC, Mim found herself working full-time as web developer, project manager and marketing communications manager, all while simultaneously managing her own original 5 piece soul-rock band, for which she wrote all of the music and produced 2 full-length albums. In 2004, she wrote and produced the music for film-short The Observer. In 2005, Mim went on to self-produce and engineer her first full-length solo-album Uprooted, all the while pursuing a career as a stage & film actress. In 2006, Paquin had the desire to further develop her classical singing voice and went on to study operatic repertoire & vocal pedagogy with Ms. Christina Henson, and coached with the ghost of Hollywood herself, Marni Nixon who described Mim as "not just a vocalist, but an artist." Mim officially left the corporate world in 2007, and by that time she had established her reputation as a dynamic stage and voiceover actress, a versatile singer, songwriter and composer. For the past 7 years Mim supported herself by working as a professional classical soloist performing with symphony orchestras and choruses in New York and New England. She is described by the senior editor of Opera News as a "brilliant soprano."

Mim just recently has begun to refocus on an acting career in television and film. In fall of 2013, she will be attending UCBT. She is currently seeking professional representation.

Mim is married to operatic tenor and game designer, Jason Robinette. They have one son: Zephyr Thomas Robinette.