[2] In South Korea, her roles have included the television series Goodbye Mr. Black, Working Mom Parenting Daddy, Possessed, Something in the Rain, One Spring Night and Woman of 9.9 Billion.

[7] During high school, she watched Jean-Paul Sartre's play The Dead without burial [fr], that elevated her awareness of the charm of theatre.

'New Year's Day' achieved significant recognition, winning the 10th Daesan Literary Award in the play category upon its premiere.

Actress Gil Hae-yeon, known for her role in "Here Comes Love" (written by Bae Bong-gi and directed by Shim Jae-chan), received the acting award at the ceremony.

[6] In 2013, She joins forces with Lee Ho-jae and Kim Young-pil (Theater Company Alleyway) in the Strindberg's play Creditors.

The Creditors is a poignant work reflecting the writer's personal experience of an unhappy marriage and his misogynistic beliefs.

This tragicomedy follows Gustav (portrayed by Lee Ho-jae), a scholarly ex-husband who seeks revenge against his unfaithful wife, Thekla, and her new husband, the painter Adolf (played by Kim Young-pil), employing his cunning wit and eloquence.

Her role as Yang Jae-hwa, the secretary to Han Jeong-ho (played by Yoo Jun-sang), resonated with viewers and left a lasting impression.

[6] She left a deep impression by portraying the roles of Son Ye-jin and Han Ji-min's mother in director Ahn Pan-seok's dramas "Something in the Rain" and "Spring Night," respectively.

[22] Gil married Cho Won-ho, a fellow founding member of the theater group Little Shinhwa, and they had a son.

She remained busy with five or six theater appearances, working as a college lecturer, and conducting acting lessons every year.