Guidance to evict unlawful possesion of family Home in Dehradun

My mother and I left India for the UK in 1967 my Grandfather took on a 2nd wife Uma Devi. My Grandfather died intestate in 1972. My Uncle forcefully with the gun threw her out together with my 2 Massi's who all ended up living at the village in Punjab. I have recently discoverred that in 1985 My Uncle and his wife sold 30% of the land to another person by forging papers showing grandfather only had 3 children when he actually had 10 (6 sons now all deceased and 4 daughter - only 3 alive). My Uncle died in 2007. My Aunty now says its her house as my Step-grandmother left a will in my Uncles favor in 1976 (not registered and a forgery) my Uncle left a will in Aunty's name. We visited her in 2008 to pay condolences but she threw us out threating to call the Police. So we lodged a Suit claiming our shares in 2008. We all live outside and cannot visit the hearing regularly. So we nominated my cousin in Rampur to attend and follow the case. I now learned that the evidence in cross-examination is in her favor so I came to Dehradun. He is now ill and I have relieved him of his duties. I need some legal person to represent us as we all live abroad. I want the house locked and all rental income she has received to date since 2008 to be put in the court. She does not allow any legal heir to stay at the house and we have to stay at hotels etc. I also want to legally claim costs for the travel and expenses incurred by us as its now 10 years we have been fighting and it really