Lenz appeared in an episode of Life Unexpected alongside Kate Voegele as part of a crossover-event between One Tree Hill and Life Unexpected.
In the sixth season, Lenz made her directorial debut.
She also starred as Michelle Bauer Santos on the CBS Daytime soap opera Guiding Light, and is recognized for her music as a solo artist and as a member of the band Everly.
While on a trip to Los Angeles, Lenz landed her first professional job in a commercial for dolls from the teen drama series, Swans Crossing.
In March 2013 it was confirmed that Lenz would have a recurring role on Dexter.
Her character Cassie was described as "an attractive former finance executive looking for a quieter life".
Moreover, in an interview in February 2015, she announced that she is currently writing two pilots dealing with the status of women during the 1920s and 1930s. In Summer 2016, she was cast in the new drama American Gothic as a character named April.In spring 2015, Lenz was cast in the Shonda Rhimes drama, The Catch for ABC playing the role of Zoe. Producer Corinne Brinkerhoff said about Lenz "We love her! She plays a witty, insightful nurse at a rehab facility." Since Lenz's exit from Guiding Light she has completed a demo of original music.On May 18, 2015, Lenz revealed she was being replaced; she wrote, "Looks like they need a different type for ZOE, so I'll be replaced," though she still encouraged fans to watch the show. Trained by the director of the Brooklyn College of Opera, Lenz plays the guitar and piano, and writes her own music.Lenz eventually went on to appear in commercials for Eggo Waffles, Dr Pepper and others.She continued to find work steadily as an actress, and by her sophomore year in high school she landed the role of Linda Halleck in Stephen King's Thinner.