Tā xiànrùle fǎnchú sīwéi, fǎnfù huíxiǎng nà cì shībài.
She fell into rumination, replaying that failure over and over.
Tips
memory
反刍 literally means 'to chew the cud' — the way cows regurgitate and re-chew food. Rumination as a psychological term borrows the same metaphor in English and Chinese: your mind keeps dragging the same thought back up to chew on.