She did her utmost to maintain peace in the family.
Tips
usage
竭 is a literary/classical character, most commonly seen in fixed expressions: 竭尽全力 (jié jìn quánlì, to do one's utmost), 竭力 (jiélì, to strive hard), 竭泽而渔 (jié zé ér yú, to drain the pond to catch all the fish — shortsighted exploitation).
memory
Think of 竭 as 'stand (立) until the water (氵) in your cup (曰) runs out' — you've given everything until completely exhausted.
