Case of hostile wife(39F) - suffering family (40M)

I need some genuine advice. I am a 40 year old man from Delhi. My wife lives alone with my 9 year old Son in Pune and is working for a famous company. We have been married for 13 years. She left my company 4 years ago after I developed a debilitating but mysterious illness that made my day to day life difficult, accusing me of faking illness to escape responsibility.

After she left, she disconnected all communication channels, the stress of losing family that I loved made my symptoms worse leading to partial paralysis and I getting confined mostly to my bed. With doctors help, and efforts from my old mother of 70 years age who alone took care of me, in 4 years I made full recovery. With recovery in fitness I also made quick strides in my career. Last year I found my wife had moved to Pune and works here for a famous company. I approached her but she was completely hostile. My Son is also alienated. She doesn't let him meet me even if he wants to. I verified that she is not into any other relation. Her ties with her parents & siblings are also strained. She possibly carries a childhood mental trauma that makes her aggressive, distrustful of others and lacking empathy. I approached Pune Police, but they did not help. Now I find myself in a position where I can move on to a better life without her, but I am not able to as I still deeply love my wife and my child. She holds on to misunderstandings, does not communicate and remains super hostile and aggressive. She refused to communicate, neither agrees for divorce, neither wants to discuss parenting or child support nor willing to return. I approached couple of lawyers, but was advised to avoid court as with Indian laws, I may end up inviting more stress, if she does not wish to return. Whatever little I could see of my son, I see him developing anxiety, possibly due to my wife's unpredictable behavior and inability to empathize. Irrespective of what my wife did to me, I still want my Son to be raised in a healthy environment and my wife to live a loving and fulfilling life.

What should I do? Any thoughts/suggestions.