चुकी थी

had already

→ चुकना
phrase Uncommon #3,496
had already Used with a feminine singular subject to show that an action or change was complete before a past point or event.
HI: मैं खाना बना चुकी थी जब वे आए।
EN: I had already cooked when they arrived.

सामी की शादी मर चुकी थी।

Sami's marriage was over.

आख़िर, वह वहाँ जा चुकी थी।

After all, she had already gone there.