Tā píngjiè wánqiáng de yìzhì, zuìzhōng fǎnbài wéishèng.
With sheer willpower, she ultimately turned the tables and won.
Tips
usage
反败为胜 is commonly used in sports commentary, business narratives, and stories of overcoming adversity. It always implies a dramatic reversal — things looked bad, then turned around. The similar phrase 转败为胜 is interchangeable.