sabrina carpenter as willa shepherd
patrick dempsey as derek shepherd
kate walsh as addison montgomery
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eric dane as mark sloankatherine heigl as izzie stevens
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t.r knight as george o'malleyjustin chambers as alex karev
YOU ARE READING
Stingray - Greys Anatomy
Fanfiction(NEW VERSION IS BEING RE-WRITTEN ON MY PROFILE, THIS ONE IS DISCONTINUED, THE NEW VERSION STILL FOLLOWS WILLA'S STORY!) Being Derek Shepherd's little sister had always been hard. When Willa was a kid and she'd try to skip school- He always caught he...