What is the name of Jim Hopper's biological daughter in "Stranger Things"?

What is the name of Jim Hopper's biological daughter in "Stranger Things"? The answer is Sara Hopper.

Sara is Jim Hopper's biological daughter with his former wife, Diane. She was born before the main events of the series and was deeply loved by her parents.

Sara became seriously ill with cancer while Hopper was serving in the U.S. Army Chemical Corps during the Vietnam War. Hopper believed that exposure to Agent Orange contributed to her illness.

Sara eventually died from cancer as a young child. Her death caused Hopper profound grief and helped explain his alcoholism, emotional withdrawal, and difficulty forming close relationships. Later, Hopper became a protective adoptive father figure to Eleven, but Eleven is not his biological daughter.