Observing purdah when living together with one's in-laws

Q: I wish to ask about women observing purdah in a joint family system. I got married three months ago in a joint family system. Before marriage, Allah Subhanahu Wa Ta’ala , blessed me and I was able to follow sharia rules strictly in my father’s home. We have no television at home, we only went out for necessities, and we studied school up to primary level and stayed back home and studied A level through online studies. Alhamdullilah, we observed right purdah as per sharia rulings in my father’s home. After marriage, my husband has given me a separate room. He has four young brothers and a sister living together with their mother in the same house.

My mother in law often asks me to sit together with all the family members including her sons when they gather for lunch, dinner and tea time. My husband remains quiet although he understands that this order from his mother is against the law of purdah and this gathering is illegitimate in the law of sharia for me to sit.

Secondly my mother in law asks me to open my face in the house and mingle with family members, talk and smile. I intend to ask the following question as per sharia rulings:

1. Can I sit in congregation as my mother in law desires?

2. Can I open my face in the house as my mother in law desires?

3. Can I talk in a voice that is loud enough to go in the ears of my husband’s brothers while sitting together.

4. Can I hear the voice of my husband's brothers while sitting in a congregation.

5. If I observe the ruling of the house, open my face, sit in congregation, talk loudly so that others can hear and listen to the talk of na mahram, who will be responsible for these sins. As you know that a woman is weak and helpless in Asian societies.

Laser hair removal around private area due to medical reasons

Q: If a man develops repeated abscesses on his private parts and the surgeons advise laser to remove the hairs around the private area permanently as the hairs contribute to abscess formation, would it be permisible to expose the private parts to male or to female nurses/doctors for laser? Since shaving with a razor is thought to increase the abscess formation. 

Inheritance

Q: A person dies leaving behind some land. His parents are not alive. How will this land be distributed to his widow, two sons and three daughters?

Posting translations of the verses of the Qur'an on Instagram

Q: I have a question regarding editing the Quran for videos. I have started an Islamic Instagram page and In Sha Allah I will be posting Islamic content on that page, including verses of the Quran. A couple of days ago, I edited a video in which I used ayah 19, 20 and 21 of Surah Al-Baqarah. However, I figured out that the previous ayah connects with ayat 19-21. But if I would use these ayat too, my video would be too long. Is it haram if I leave out these ayat and just make a video with verses 19, 20 and 21?

Renting out a house to a Hindu

Q: We have given a portion of our house on rent as it is very big and very difficult to clean and maintain. Our tenant, who is a Hindu, does his prayers according to his beliefs. I want to know whether it is permissible or not as the building is the same but the portion on rent is totally separate.