Camie Loneozner (played by actress Koo Stark) was a character who made a brief appearance in an early cut of A New Hope.
She was friends with Luke on Tatooine and hung out with him, Biggs Darklighter, Laze “Fixer” Loneozner, Deak, and Windy at Tosche Station. In the Expanded Universe (now called Legends), she went on to marry Laze after Luke left Tatooine.
You can see her in the deleted scenes here.
In the new canon, Camie is the “wife” that Luke dreams about in the prologue of The Last Jedi novelization by Jason Fry.