She trained to be an opera singer, but is most known for her television and cinema roles.
[1] Huffman played Lisa Trekker in the Channel 4 production of Dennis Potter's Lipstick on Your Collar.
[2][3] She also played Donna in the Toronto production of Mamma Mia!
She also played Cosette in the original Mirvish production of Les Misérables at the Royal Alexandra Theatre.
In the Canadian television drama series Wild Roses, Huffman played the female lead (Maggie Henry).