Not adopting the Shar'ee procedure to annul the nikaah

Q: I am from Karachi. When I was on duty my wife suddenly went back to her fathers house without my permission to hassan abdal dist attock and he forced me to give her divorce. When I refused, she went to court at hassan abdal and filed for a khula. She got khula from the court without giving back my 10 tola jewellery and she appeared in court and she took an oath that she has no jewellery. The judge gave her khula. Kindly tell me is the khula valid? She wants all her jahez saman back but she has all my jewellery and I have not signed any khula paper or given her any talaaq.

Cancelling a marriage proposal

Q: This is my friends problem:

I am engaged to a girl. Last week I saw her with her uncle (aunts husband) involved in sex and I also found that she has an affair with 2 other people. My family and the girls family don't know about her illegal relations. Right now I am still engaged to her. Tell me what to do? I can not break the engagement because her family is very powerful. They have money and position. I cannot tell this to anyone because it is difficult for anyone to believe. I don't have proof except that I saw them with my own eyes. Please guide me what to do. Should I marry her or tell me any dua or wazifa which will help me to expose there sin in front of every one. I can't refuse this marriage or run way. 

Previous years qadha fasts and kaffara for breaking a fast intentionally

Q: As Ramadhaan is nearing so I thought of covering up all my Qadha roza but I don't have the exact count of the Qadha roza. What should I do in this case? Also I have Qadha roza of the previous few years and I don't remember how many they are. 

I had once broken my fast when I was young but baaligh, but I did not know that it was a major sin. How do I cover up for that?