हो चुकी थी

had already …

→ होना
phrase Uncommon #4,995
had already … Marks a completed action or change of state in the past; this form agrees with a feminine singular subject.
HI: जब मैं पहुँची, बैठक शुरू हो चुकी थी।
EN: By the time I arrived, the meeting had already started.

सामी की शादी हो चुकी थी।

Sami was already married.

वह बात कब की खत्म हो चुकी थी।

That had been over for a long time.

रात हो चुकी थी।

It was already night.

ग्यारह बजे घर में एकदम शांति हो चुकी थी।

By eleven o’clock, the house had become completely quiet.

— Raat Akeli Hai (2020)

लेकिन तब तक बहुत देर हो चुकी थी।

But by then, it was too late.

— Tribhanga (2021)

मुझे देर हो चुकी थी।

I was late.

— Sardar Udham (2021)