Leslie Hamilton Freas, the twin sister of actress Linda Hamilton, has died at the age of 63.

Leslie “passed away unexpectedly” last Saturday, according to an obituary published Thursday by the Burlington County Times. She is survived by sisters Linda, Laura Hamilton, and brother Ford Hamilton, in addition to her children: Ashley, Adam, and Kendall.

The cause of death was not disclosed.

A Salisbury, Maryland, native, Leslie relocated to Mount Laurel, New Jersey, 35 years ago. Though she appeared onscreen in 1991’s “Terminator 2: Judgment Day” with Linda, Leslie is said to have “passionately worked as an ER nurse,” before shifting gears to work “as a hospice nurse later in her career.”

Leslie has been called “a consummate caretaker, and devoted her life to helping her children and the lives of others.”

A rep for Hamilton did not immediately return Page Six’s request for comment.