DV case filed, facing issues.

Dear Lawyers, I got married in Dec 2012 with a sales tax consultant who also happens to be an LLB. My in laws forced me to leave job and study CA. I am an MBA n was working with a private bank. Apparently, my husband didn't want to marry me but his girlfriend, but couldn't. Right from the 4th day, he and his family started threatening me of divorce for smallest things like, spending 100 rs on auto or servant going to buy onions or buying a teeshirt in a month. I was called a prostitute and a bitch by my sister in law coz i stayed in the same room as my husband. On opposing this, i was told to tolerate or leave. I went into depression and somehow after almost two years, found some courage to leave the house - in fact, i was thrown out when i went to visit my widow mother. My husband texted me saying if I didn't want to do as his parents directions, i need not come back. My belongings were given to me on the main road- along with divorce papers. I filed a DV case against him, mentioning the mental n physical torture - threats of divorce , abusive behaviour, physical abuse at times. Also, my father in law used to barge into my room when my husband was out drinking. (My husband is an alcoholic which I learnt later). My husband had tried to kill me in an accident, when he was pretty drunk, a month before my marriage. (Ok i made mistake n married him even after this ). Now, its been two years to the DV case. We recently had a mediation by court, where they asked us to give bills of marriage expenses n said they shall see to it. Since my in laws are top shots, and wanted a lavish wedding, they only did all arrangements. We paid them some amount in cash, no bills as such. Now they have alleged me in their response that I married him for money. They have denied all the allegations, obviously. I have all the proofs - msgs, whatsapp, emails, bbm chats screenshots. I am too sensitive and belong to a normal middle class family. I am again broken after their behaviour and find that law is just on paper. My lawyer says that my case is weak since I don't have proof of physical abuse. I tried to do a job after separation, but failed since not in a proper mental frame, moreover, a gap of 2 yrs has hit my career hard. What should i do? Please suggest. I am tired but i do want to fight for my dignity and pride. Should i claim alimony? If yes, what could be the approx amount? My husbands family assets are worth 20 crores - all earning. My father in law hasn't kept anything on my husbands name though.