Nikaah & Marriage Issues

Q: My father in law asked his daughter in front of myself and my two uncles whether she agreed to marry my brother. She allegedly replied 'yes.' My wife seen her sister nod her approval. My two uncles both heard the reply but I neither heard the question nor the reply because it was done in such a soft tone. Subsequently, in my presence and my brother in laws presence she was asked again to clarify. This time I heard the reply. My question is that tomorrow at the Musjid my uncle and I are witnesses to this marriage on the documentation that the girl signed. My uncle and I will also have to sign the same or another document.

1. Will the marriage be valid based on the fact that, when asked by the Imam, both witnesses on the documentation, my uncle and I did not both hear the girl say yes at the same time, i.e. I heard her say yes about half hour later, when the girl was asked again.
2. Is it permissible for me to sign the document saying I was a witness and say so when asked by the imam.

Q: I just want to ask a question about the money for a wife. I am pregnant my husband fulfills my all needs, but he does not give me pocket money as I need it for myself. e.g for my parents. My husband can afford it. Should he give me money or not?

Q: Could you please explain according to hanafi maslak. The below issue belongs to my friend: 

His father-in-law has two wives. 1 son is belongs to the 1st wife. 1 daughter belongs to the 2nd wife. Please tell me, is the 2nd wifes daughter  maharam to the 1st wifes son and are both considered as brother & sister.  

Q: I read a Hadith which says,” The prophet (peace be upon him) once told one of his companions to choose a wife from a tribe different to his, and then to choose for his son a wife from a third tribe and to seek for his second son a girl from yet another tribe”. My question is, is this Hadith authentic? If so then it means that marriages should not be done within close family as cousins etc. I appreciate if you please comment.

Q: Can someone marry his sister in law (sali) at same time while he is already married to her sister? I mean can I marry my sister in law (Sali) without leaving my wife?

Q: A boy who was baaligh, touched a woman. the boy was full of lust but the woman was fast asleep. he touched her over her clothes. She did not wake up. A number of years have past. This boy now desires to marry the daughter of this woman. Is this allowed in islam. Can the boy marry this girl?

Q: Is grandpas brothers daughter a mahram?

Q: Musa and zainab are involved in illicit relationship for couple years, by the occurrence of the days and nights their relation became more solid because now zainab fell pregnant. To get rid from this shame the two families decided to get them married. What will be the hukam of this nikkah according to shaafi and hanafi mazhab and what will be the solution to this matter (for these people to be saved from this shame Islamically)?

Q: Is your fathers brothers wife mahram and is your dhadhas wife mahram and is your fathers cousines wife mahram?