Redmond's feature film appearances include 2002's Hellraiser: Hellseeker; she auditioned for this role using bondage artwork by Eric Stanton instead of a standard actor's headshot. Other film roles include The Sisterhood of the Traveling Pants, Case 39, The Invitation, and The Entrance. The latter film earned Redmond a Leo Award nomination in 2007 for Best Lead Performance by a Female in a Feature Length Drama; she went on to lose the award to Alexia Fast for Past Tense.

Redmond is a boxing and martial arts enthusiast, and has participated in charity walks for the British Columbia Cancer Foundation. She has a son, Lucas Noon-Redmond, who was born in October 2007.

Redmond's first screen role was in an episode of The X-Files; this introduced her to Director David Nutter and Writer Chris Carter, who would later cast her in a recurring role in the series Millennium, as well as the 2008 film The X-Files: I Want to Believe. Her other television roles focus on science-fiction programming, with appearances in Harsh Realm, Andromeda, Dark Angel, The Outer Limits and Smallville.

Redmond also taught acting at the New Image College of Fine Arts in Vancouver, British Columbia. During her time with the faculty, she directed the college's 2011 production of the Stephen Adly Guirgis play The Last Days of Judas Iscariot, alongside fellow actor Frank Cassini.