Nikaah & Marriage Issues

Q: Is the sister of my step mother a mahram for me?

Q: There are some websites and apps on the internet which help us learn foreign languages. Now on these sites we have to translate from one language to another. If they ask me to translate a sentence, I translate it and the translation is "I am marrying you". When I send the translation, if they read it with two witnesses and accepts it, does it make a marriage?

Q: I am planning to get married and proposed for a certain girl. The girl whom I want to marry said that if I accept the condition of not taking a second wife in the future, then she will marry me. Personally, I also do not want to take a second wife in the future. I want to spend my life with my first wife till I die. The question is: can we make the condition of not taking a second wife in the future at the time of the nikaah?

Q: Please advise if a son in law can be a mahram for his mother in law in performing umrah.

Q: Why are wives so defiant? They refuse to listen to their husbands?

Q: Why is it said in Islam that women are not supposed to cook for their husbands?

Q: Can I accept to take some of my wifes savings to bear all the visa expenses including residense, rent, etc. this year? I am married since 2 years. Me and my wife do job. She is a teacher in homeland. While I work abroad (middle east). I give pocket money to my wife every month, as well as food expense separately to my joint family. I get one month leave to visit my family in a year. Two times I brought my wife on visit visa in two years. This year I have plan to save some money and to buy some property in my homeland in future, hence not to invite my wife this time, but she agreed to pay all expenses on her own, which I didn't agree. As I don't feel comfortable to get any of her earnings, because of her talking many times that she strongly feels that, her earning is totally for her. On the other hand she taunts me many times that I don't save enough money to get some property. What should I do?

Q: My husband spends 4 nights with his first wife and 3 nights with me. Out of one of the 4 nights with his first wife, he sleeps in a separate bed in another room but under the same roof. Is that counted as 4 nights or 3 nights?

Q: Can I touch my private part on my wife's body or chest? Is there any gunah or not?

Q: I have heard that masturbation is sinful and haram in Islam. Is the ruling the same for women, since mostly all the answers are related to men? I feel bad and guilty after doing it and I have also heard that masturbation can cause psychological problems and mental illness such as weak memory.