Visiting one's fiances house

Q: Is it against hayaa for a girl, who observes complete sharee purdah, to visit her fiance's house in his presence even if she intends to meet her mother in law, who is her father's big sister? If the girl feels shahwat in her heart and gets bad thoughts in her mind will it be permissible for her to visit her fiance's house? 

Giving sadaqah to one's poor sister

Q: Can I give sadaqah to one of my poor sisters. I have one married sister, she is a heart patient and needs to get medicines every month. Her husband is alive and works but the financial situation is very bad. Her one son is in boarding school and they often find it hard to deposit fees for him.

I decided to give 10% of my earning every month as sadaqah to them, is it permissible?

Salaah of a person who has urine drops problem and salaah time is about to expire

Q: A person has a urine problem, where if he goes to the toilet, for the next 30-45 minutes he cannot read salaah due to urine drops. If the time of salaah is about to end and the condition persists, does he have to make Wudu and perform salaah, or let the salaah become qadhaa and perform it after the time has expired. (The person is not a ma'zoor as the condition did not last for an entire salaah time)

Purchasing a property on an interest bearing loan

Q: My father bought an agricultural land almost 19 years ago, measuring 110 acres. My father is an advocate by profession and at the time of purchasing the land, my father had some money earned by himself and took some money in the shape of a loan from the bank and bought the land. I have heard that taking a loan is completely haraam, so is the land haraam for us? How do we make it halaal?

Father not following his son in salaah

Q: A father asks his son to vote for a particular candidate in electionbut he doesn't obey his father and supports someone else. Now the father gets angry with his son and abuses him on several occasions. This person (the son) leads prayers in the local mosque but his father doesn't follow him in congregation. The question is that what should the other people do? Should they follow him or not?