My girl friend is house arrested by her parents - please help

My girlfrnd is house arrested. and they have removed all sorts of communication. there caste is naidus (kapulu) im a viswabrahmin. they did not accept my love . even i told my parents my dad is scared about there family. he is not opposing neither he is not supporting. can i file a complaint against there parents with the proofs i have only facebook chats. will those be enough. or plz suggest me a method to sucide plzz i have been crying from so long time. i want to die. <Name and number removed by staff for privacy>