Kathleen Shepherd

Kathleen Shepherd is the sister of Derek and Amelia Shepherd.

Early Life
Kathleen was born into a large family in New York, the family often meets up on holidays although when Derek stopped, she asked Nancy to visit him ("Let the Angels Commit")

Derek Needing a Nerve
Meredith ordered Heather Brooks to call all of Derek's sisters to ask them to donate a nerve. Heather mentioned she left Kathleen a message. Kathleen somehow got Heather's phone number and called her back. It is left unknown why she called because Heather hung up on her, and everyone she was on the phone with, on Meredith's orders. ("Love Turns You Upside Down")

Romantic
Kathleen is married and presumably has children, which would form part of Derek's nine nieces and five nephews.

Career
Kathleen, like the rest of the Shepherd family, is a doctor, trained in psychiatry.

Notes and Trivia

 * Kathleen is the only one of Derek's sisters not to have appeared on the show.
 * Meredith mentioned that Kathleen seemed like a good mother, and her children seemed sane, though she wouldn't like to hang out with her often.
 * Kathleen called Nancy and asked told her to find out why "the slutty intern's (Meredith) panties were hanging on the hospital bulletin board". (Let the Angels Commit)
 * In Meredith's phone contacts, Kathleen is listed as Kate Shepherd.

Kathleen Shepherd