Flat agreement and share certificate

I bought a flat in 2013 and made my wife also a co-owner. I have filed a divorce petition in family court. My wife has robbed the original documents from my custody. The co-op hsg society managing committee is harassing me and not giving me a verified copy of the agreement and share certificate. How do I take action against my wife and managing committee ? Secondly how can I remove my wife from my flat ? She is not leaving and demanding 50%. On what grounds can I remove her from my flat. She has her own flat which she has put on rent.