Blackmailed into fatherhood

I am a bachelor , Muslim , age 28 , struggling so hard to live every moment because of a girl . I met her one year back . From the very beginning this girl was very emotional and sentimental . Always she used to tell her hardships and family problems and I became sympathetic towards her and started consoling every time . In between she lost her job and that time she needed my support . In the due coarse she started flirting with me and started compelling and convincing me to do physical. But I did not agree as I was not having any intention to marry her nor any commitment towards her . And I openly said that to her . She also said there will be no commitment . 3 months I stayed with her , we had intercoarse also. She got pregnant and hided from me for 2 months . She started threatening me ..and she started playing games . Without my knowledge she took contacts of my friends and family from my phone in the very beginning itself . She is telling she will go legally. Shez already married but on divorce stage . Shez a Hindu .. I already informed my parents . Can anyone advise what should I do ??