Family pension for second wife

My Father is a police man nd he married his first wife nd they have no children and took a girl for adoption in 1973 suggested by his first wife.After that she was found in brothel house (adultery) by police nd said my dad's name that I am his wife they left her.But my Dad after coming to know this he left her in village panchayati and they seperated.As she tried killing adopted daughter for Gold chain in her neck .But doing duty and caring that girl is so tough for my dad and My grand maa asked his relative bro to marry his daughter she is my mother .They got married in 1982 nd My mom nd adpted daughter lives with dad. But frst wife started keeping cases and saying not leggaly divorce and asking money since then torturng my dad mentally nd through law .She abused my dad bad words in front of everyone as she is very character less women who hided her true self.From then she tortured my father by keeping 100's of cases and Getting money from dad and no peace at all.Then his adopted daughter got married in 1988 my parents performed that.Later I was born orginal daughter of my parents I looks same like my father.Then my dad got retired in 1999 nd he didn't mention any nominee in papers as he feared she will.take that to court and proves second.marriage and sends my parents to jail and I baby girl will be left on .he thought to write our names after his frst wife divorce as he applied maultipe times.But his frst wife forced through Court to write her name but he didn't written even after so much force nd then My father is very healthy and suddenly he got sick and died within 14days without mentioning nominee in 2013 nd as she not getting maintenance from dad she died within 3months sep 2013 bcos no nominee is mentioned in our dad's pension and not having any proof of dad to apply as he was staying wit myh mom 31years upto then nd frst wife and dad seperated before 35years .My father was died due to her cases torture and by thinking so much as she keep hundreds of cases for money in 35 years and she never let my dad to live happily and suffered us .Later on we asked pension but was said that second wife is not eligibleMy point here is We have proofs like 1)Daddy death certificate 2)frst wife death certificate 3)Family legal heir certificate given by tahsildr, MRO 4)Dad took pension in bank book which is joint account with my mom nd dad took pension from it for 14years till his death 5)My mom adhar mentioning my dady name as hubby 6)My adhar mentioning my dady name 7)My dad got pensioner's temporary health card by district magistrate 8)He bought that card for me as it shows my name,date of birth,photo nd relation to pensioner :daughter nd his pension ID number 9)My mom dad's marriage done by gram pancahyat 10)My adpt sister given no objection on bond paper with sign We need pension what to do .My mom performed every duty nd with humanity please do justice for us