Question: Who did the actress who played Jackie Cook on Veronica Mars play on Grey's Anatomy?

<P0-S0> Play It Again, Dick is an American meta comedy web television series that was released on The CW's online platform, CW Seed, on September 16, 2014. <P0-S1>  It functions as a short spin-off series of the teen noir show "Veronica Mars", which aired between 2004 and 2007; the show contains appearances by most of the original starring cast. <P0-S2>  The series follows a fictionalized version of Ryan Hansen as he attempts to convince his "Veronica Mars" cast-mates to participate in a spin-off centered around his character, Dick Casablancas. <P0-S3>  The series was created and executive produced by Rob Thomas, produced by Danielle Stokdyk and Ryan Hansen, written by Thomas and Bob Dearden, and directed by Viet Nguyen. <SEP> <P1-S0>  Written by Shonda Rhimes and directed by Mark Tinker, the episode was originally broadcast with "Deterioration of the Fight or Flight Response", in a two-hour season finale event on the American Broadcasting Company (ABC) in the United States on May 15, 2006. <P1-S1>  "Grey's Anatomy" centers around a group of young doctors in training. <P1-S2>  In this episode, Dr. Izzie Stevens (Katherine Heigl) and her fellow interns have to plan a prom for Dr. Richard Webber's (James Pickens, Jr.) niece Camille Travis (Tessa Thompson). <P1-S3>  Further storylines include Dr. Preston Burke (Isaiah Washington) recovering from his gunshot wound and Denny Duquette's (Jeffrey Dean Morgan) death following his seemingly successful heart transplant surgery. <P1-S4> "Losing My Religion" is the twenty-seventh and final episode of the second season of the American television medical drama "Grey's Anatomy", and the show's 36th episode overall. <SEP> <P2-S0>  She played Jackie Cook on the television series "Veronica Mars", Sara Freeman in the period crime drama "Copper", Nyla Adrose in the film "For Colored Girls", civil rights activist Diane Nash in "Selma", and Bianca in "Creed". <P2-S1>  She stars as Charlotte Hale on the HBO series "Westworld". <P2-S2> Tessa Lynne Thompson (born October 3, 1983) is an American actress and musician. <SEP> <P3-S0> "Veronica Mars" is an American television series created by Rob Thomas. <P3-S1>  The series ran for three seasons; it premiered on September 22, 2004, during UPN's last two years, and ended on May 22, 2007, after a season on UPN's successor, The CW. <P3-S2>  The series balances murder mystery, high school and college drama, featuring social commentary with sarcasm and off-beat humor in a style often compared to film noir. <P3-S3>  Set in the fictional town of Neptune, "Veronica Mars" starred Kristen Bell as the title character, a student who progressed from high school to college during the series while moonlighting as a private investigator under the wing of her detective father. <P3-S4>  Episodes have a distinct structure: Veronica solves a different "case of the week" while continually trying to solve a season-long mystery. <P3-S5>  The first two seasons of the series have a season-long mystery arc, in which the conflict is introduced in the first episode of the season and resolved in the finale. <P3-S6>  The third season takes on a different format, focusing on smaller mystery arcs that last the course of several episodes.