Marital problems

Q: I am married and have kids. Through out my marriage I had a lot of problems. I stayed because of my kids. The issues were mainly my wife is listening to her brothers and parents who have just become rich and I still belongs to the middle class. She just argued on everything and when she is at her parents home she lies about me (means doing Gheebat in indirect ways). She goes with her parents on outings without me. I clearly told her that try to live happily with the salary I earn and don't keep your eyes on your brothers money. But then she started arguing by saying that my brother is giving me money and taking me out and you have to live alone if you cannot spent for me and for yourself. (If I to her as Greedy, I would be correct). She even shouts in front of me and doesn't even let me touch her as for marital intercourse or for anything and just saying that you are having just lust for sex, but cannot fulfil my other dressing and so on. She even prays 5 times a day and reads Qur'an also. Will it be acceptable by Allah Ta'ala in this situation? Please help and also advise that what should i do?

Playing in the pool with an ustaad

Q: An activity would be coming up for students hosted by ustaads. Please advise as a student would it be more respectful to involve your asaatiza in the fun that you are having or not. E.g. There are swimming facilities available (totally according and abiding by the laws of shariah) would it be considered disrespectful if the student splashes water on the ustaad, bearing in mind that it was only done out of muhabbat, shafqat and for the sole reason of having fun with an ustaad. Aside from that please provide a few guidelines indicating the manner of respect when dealing or being in the company of asaatiza.

Nikaah without witnesses

Q: My question is on the validity of Nikaah. Is the nikaah valid by mere confession between a boy and a girl that they accept each other as husband and wife? without any supplication or dua ?and without anybody's permission? And also what will be the kaffara if they are doing so?

Masturbating

Q: I am 15 years old girl. Alhamdulliah I wear a hijab whenever I go out. My problem is that I masturbate, and I feel extremely guilty about it because I know it's wrong but I still can't stop myself. Whenever I go out even though i'm covered I still want the boys to look at me (I know it's very wrong). Whenever I stand in front of the mirror I think that I'm so pretty. I don't know I really want to get close to Allah but I fail every time. I don't feel like praying, I am always tired. I don't know if it's right to say but I hate myself, I hate the fact that I'm alive. I am nothing but a shame. I really want to get close to Allah. I am so scared every time that what if I die suddenly, Allah is never going to forgive me. I don't even know how to explain all my feelings to you. I hope you understand what I'm trying to say because it's impossible to express my feelings.