Samantha appears in Twilight when she walks into the office to return a signed tardy slip while Edward Cullen is talking to Shelly Cope about his schedule. She then hurries out again, described by Edward, "as if she was in a rush to be away from school". When she opens the door, a gust of wind blew Bella's scent toward Edward, making him aware of her presence and forcing him to make an abrupt departure. She also goes down to La Push with Mike and his friends — including Bella — and appears to be dating Lee.
She is last seen at prom with the rest of her class.
Samantha is present during graduation and the Cullens' graduation party.