Leslie H. Freas (#LindaHamilton's twin sister) has sadly passed away unexpectedly on Saturday, Aug. 22, 2020. She was 63

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Linda Hamilton’s twin sister, Leslie Hamilton Freas, has died. She was 63.

Leslie “unexpectedly passed away” in New Jersey on Aug. 22, according to an obituary published by the Burlington County Times. She "passionately worked as an ER nurse, and ultimately transitioned to working as a hospice nurse later in her career," the obituary states.

Her cause of death has been publicly announced.

Leslie’s sole film credit is for 1991’s Terminator 2: Judgement Day, in which she appeared alongside her twin, serving as a double for her sister, who starred in the film as Sarah Connor. Leslie was also featured in a scene in which she portrayed her sister’s reflection in the mirror.

She is survived by her two grandchildren and three children, Ashley, Adam and Kendall, as well as twin sister Linda and their older sister and younger brother.

Reps for Linda did not immediately respond to PEOPLE’s request for comment.