Cheating And Money Extortion

I Was In A Short Term Relationship With A Girl Who Was Cheating Around With Many Other People Including Her Own Uncle..She Had Taken An Amount Of 50,000 Rs From Me On The Pretext Of Buying A Phone..Later When I Asked Her The Cash Back..She Told That She Was Pregnant And That I Was Responsible For Her Pregnancy..Later She Confessed That It Wasn't Me But Someone Else Responsible For Her Pregnancy..I've Got The Evidences Of Her Cheating Including Call Records..MSG's..WhatsApp Chats And Mails Including Her Pregnancy Reports..In Fact She Was Mentally Harassing Me For Nearly Two Months Before I Forced Her To Confess The Truth..She Got My Laptop..Phone And Hard Disk Confiscated And Destroyed By Her Uncle Who's A Dirty Monster Himself..She Knew That I Hold The Evidences Against Her..But By God's Grace I Still Hold Those Evidences..I Want My Things Including The Money Back ASAP..What Should I Do ?