언니는

as for older sister

→ 언니
phrase Uncommon #8,039
as for older sister 언니 means an older sister or an older woman a female speaker is close to; 는 marks her as the topic. The exact relationship depends on context.
KO: 언니는 지금 집에 있어요.
EN: Your older sister is home now.

언니는 아직 혼인 안 했죠?

Sister, you're not married yet, right?

— 와호장룡 (2000)

언니는?

What about your sister?

— 더 위치 (2016)

언니는 어디 있니?

Where is your sister?

— 아바타: 물의 길 (2022)

당신 언니는 금봉의 친구 였어

Your older sister was Geumbong’s friend.

— 음식남녀 (1994)

언니는 언니의 기술을 믿어

My older sister believes in her own abilities.

— 당갈 (2016)

언니는 마녀 야!

My sister is a witch!

— 더 위치 (2016)

언니는 옷 갈아입어 내가 할게, 너 학교 가

I’ll help your sister change. You go to school.

— Tune in for Love (2019)

언니는 뭐가 됐어?

What happened to you, sister?

— 아틀란티스: 잃어버린 제국 (2001)

언니는 자요?

Are you sleeping, sister?

— 미스틱 리버 (2003)