Nikaah & Marriage Issues

Witnesses in a nikaah

Q: What is the procedure of being a witness for your sister/daughters nikah? Also, does the mehr have to be given at the time of the nikah or can it be given before or after? Does it have to be given physically? Would it just suffice if it was just stated?

Showing equal love and attention to one's children

Q: I want to know that if a child was expected to do certain things (provide,work etc) for the family by a certain age even when having other responsibilities isn't it only fair to expect all the other children, when they reach that age to be expected to do the same (especially since they have lesser responsibility than the first child did) as in Islam all the children should be treated equally, so just like they will have give driving lessons to the others as they did for the first child the same way the other children should be expected to do the same chores and work for the family the way the first child did.

Husband demanding anal sex

Q: I'm starting this by saying I am married (nikaah is done but I dont live with my husband yet). I didn't know that anal sex is haram and when I found out, I started avoiding it and my husband was disappointed with me. I know I did it for Allah but he doesn't want to understand me and as well as the fact. I had read online "if your husband demands for anal sex, you can go for divorce," but I spoke to my mom and she told me that you should be doing whatever your husband says and the sin is on him, so once again I had anal sex with him thinking about what my mother said. I don't know what is right.

Also, things between me and my husband are not going well at all and I had read that if the marriage is not consummated, a woman does not have to stay iddah after talaq or kul'a.

My final questions:

1. Should I avoid anal sex and let my husband be angry with me or should I let him do whatever he wants and let the sin come on him? (There will be no point in trying to explain to him that it is haraam because he never listens to me and doesn't want to listen to whatever I say)

2. Is my marriage consummated because of only anal sex? We both have never had normal sexual intercourse.

3. Should I be staying for iddah if in case I get divorced to him?