Frauding lying threat call

Sir it’s about love story I love my girlfriend and she loves me we completed one year after that we decide to tell our parents to get married my age 25 her age is 23 when we talk about marriage my parents are ready but her parents are against they told to if both will do court merriage or run we will kill u both they emotionelly black Mail her and she left her job they took her phone and not allowing to go outside after some days again she try to conveinc to her parents so their parents planned to ask from me to give all family Adhar card electricity bill family photo marksheet etc. which I given to them then they called me in their home along with parents when we reached again they to it’s not possible her father is si in police so he taking all the advantage of his post we spend our 60 thousand rupee to go so far away from my home they took all the document now what I will do his daughter cried so much in front of them but they no listen any singal word of her or not my also they again took her phone but i have all the proof