Nikaah & Marriage Issues

Q: Can a Muslim boy marry a non-Muslim (Hindu) girl after her accepting Islam?

Q: I’m a 54 year old widow for 5 years. I recently made nikah (alhamdullilah). Our nikah was done accordingly to sharia ruling, but we didn’t sign any register. We’re not worried about it either. But many people say now we were supposed to sign a register. Is that really that important?

Q: Different "Rasam o Riwaj" on weddings like "mehndi, band baja, bhangra, music" are sinful activities. If we performing wedding in Muharram and Safar, then the sin of these activities remain same or higher?

Q:

1. I have been in a secret nikaah for 10 years. As such, we didnt do walima. My immediate family now know about my nikaah. Is it possible to do a walima so long after a nikaah?

2. Also, according to my husband he says that because I'm a secret wife, I have no right to inheritence according to Islam. Kindly confirm/clarify.

3. I must point out that 5 years ago, his first wife learnt about us. She was devastated but wanted to meet me. She has accepted his nikaah to me but insisted that the nikaah must still be kept a secret and set specific rules for us. So...is our nikaah still a secret one and is it justifying for her to set such rules and ask that the nikaah still be kept a secret?

Q: I have psoriatic arthritis. It gets worse after each pregnancy. After my 2nd child (I have 2), the bones in my feet and knees have become bad so I can only read salaah while sitting on a chair. I can't go on my knees at all as it causes excruciating pain and I can't wake up. In my case, would I be allowed to tie my tubes after a 3rd baby?

Q: What are the duties of in laws towards their son in law? Are they obliged by Islam to call and visit their son in law more often and if he is living abroad and comes after 7 months should that son in law be invited to any party etc? If a son in law takes this as an issue that why didn't they invite me home etc. what should a wife do in this case?

Q:

1. Is it permissible for a woman to request surgery (caesarian section) instead of natural birth so as to avoid the pain of labour?

2. Is there any nifas in the case of caesarian section birth?

Q: A person gave his daughter to his sister when she was a child (for adoption). Can she (the adopted girl) marry with the consent of her father's sister?

Q: My son was breastfed by a particular woman. Is that woman now my mahram?

Q: If a woman gets divorced, keeps it a secret, and then gets married again secretly. Her second marriage is done without her guardian but in the presence of two witnesses and it is not announced.

After some time, she reveals this secret only to her children. They keeps this secret for almost 8-9 years because the children are afraid and their parents constantly tell them to hide it. After those years of stress and frustration, their children reveal all this.

I have heard somewhere that hiding your marriage is actually commiting zina. I want to know if the couple is subjected to the hadd punishment and this includes her children too as they were hiding too all this time although they did not want to?