Requiring sound proof when making a claim

Q: My late father had a piece of land in his name. My father had no will. According to my sister-in-law my late brother gave his share of the land to her verbally, one month before his demise. My late brother was sick, he had cancer of the blood and passed away within six months. The vacant land is not in our possession and is in my father’s name till date. I requested a copy of his will and witness to confirm the above claim and I was not successful. Please advise if my late brother can give his share not in his possession. Please advise the executors and administrators as to how my late brothers share of this land must be distributed (one wife and one brother). Your assistance will be appreciated.

Respecting one's mother

Q: I always have behaved badly with my mother. It is from my childhood. Now I know it is a grave sin but after doing tawba so many times I cannot change myself. I always have negative thoughts about her instead of her favours to me. I always think about the bad side about her and disrespect comes in my mind for her. I have tried but cannot get rid of it. I know she has many faults in her for which I disrespect her in my mind but this is a grave sin. How do I get rid of these thoughts and treat her with utmost respect?

Qadha for missed fasts

Q: If I have not kept many fasts without any valid reason in my childhood, when I became baligh how do I fulfill it? Do I have to make kaffara? What is the kaffara and what if the amount of fasts is so many and I don't remember? 

Balance between ibaadah and social life

Q: How do I balance between ibadah and everyday life? When my sisters come they complain that I don't give much time to them.. I also feel it difficult to go to someone else's home and fulfill my regular amal as it takes so much time..I also fear after marriage I will not be able to continue these aamaal as there will be so much responsibilities.. so what should I do?