Actress Piesse was cast as Donna in
High Flyers when she was 15. She learned the trapeze and Spanish web for the role and took six months off school for the shoot. She then went on to play Alicia in
Horace and Tina, had a recurring role in
Stingers, and guest starred in
Blue Heelers and
Last Man Standing. She subsequently appeared in
Star Wars: Episode II – Attack of the Clones and
Episode III – Revenge of the Sith as
Beru Lars (
Luke Skywalker's aunt). In January 2011, Piesse completed shooting her scenes for the romantic comedy,
Love Eterne. She plays Sidonia, a psychic, mentor and confidant to the female lead, Medina, played by
Melissa Navia. Her song, "There for Me" is featured in it. After completing its film festival run,
Love Eterne has won awards at the Los Angeles Movie Awards, Best Shorts Competition and
The Accolade Competition. It was an official selection at the
New York International Independent Film & Video Festival (20 November 2011) and NewFilmmakers New York Annual Christmas Show (13 December 2011). In December 2017,
The Actors Awards nominated Piesse for
Best Supporting Actress for her role in
Love Eterne Mourning, a short film made from a couple of her scenes from
Love Eterne. On March 29, 2021, it was announced that Piesse would return to her role as Beru Lars in the
Disney+ series
Obi-Wan Kenobi. When first approached about returning to the
Star Wars universe by the show's director
Deborah Chow, Piesse was not actively pursuing acting roles; she and her husband were living in Europe, focused on dealing with their exit from ESP/NXIVM. "[S]ome roles are an easier fit than others. And this one just fits so easily that I didn’t feel I had to try too hard to embody [Beru]," Piesse told
ELLE. "The main way to prepare was just—after everything I’d been through, I was still recovering from
PTSD. So I did a lot to heal and nourish myself and strengthen myself to make sure that I had all the energy that I needed to be on set. So it was more supporting myself."
Singer and songwriter in a scene from
Love Eterne. Piesse's song "All I Have" was featured in two episodes of the CW television series
Life Unexpected in 2010. Bonnie recorded "Bittersweet EP" with Producer
Emile Kelman and her song "Ariella" won the Singer Songwriter Category of the UK Songwriting Contest in 2013, alongside Lisa Nelson for her song, "Butterfly." Another one of her songs, "There for Me", is featured in the romantic comedy,
Love Eterne. Piesse recorded a cover of
Dream State (Brighter Night) by
Son Lux for opening credits of
The Vow. == Personal life ==