advising someone

Q: I am a doctor and know a patient/girl has a mental illness which is serious enough to harm a relationship and her condition can be stable on lifetime medication. My friend is interested in this girl for her son's marriage as her son likes her too. Should I inform my friend?

Q: Why some people don't do lot of zikr of kalima?

Q: My father said bad things about the hereafter and that Allah will not punish us with fire. Of course Allah has given me clear signs of his power. Now I'm worried about my dad who said that there will be no punishment. We will just sleep. How can I explain to him that we have a creator?

Q: What should be our behavior with friends who dabble in major sins? Should we cut them off or advice them?

Q: There is a person on the internet, who seems to be a Muslim yet makes fun of people about things which are a part of Islam (e.g. The ruling on eyebrows, he thinks that these things aren't a part of Islam). Is it permissible to use harsh words to stop this guy.

Q: If two brothers fight against each other and finally say that we will not talk to each other forever then what will be the solution to make them agree.

Q: I know someone who has an eating disorder; when advised to eat by her parents she refuses and advises that she is putting on 'too much weight'. Is there a ruling in Islam regarding this to explain to her that what she is doing is wrong?

Q: I see a woman visiting my father everyday behind everyones back. Im not sure if he married this lady without my mother knowing. And I dont know if she will want to stay with him after this. Do I confront my father or tell my mother? If they dont stay together after I tell them this then is it my fault that they get divorced or must I just overlook all of this.

Q: I have a female friend who drinks alcohol and consumes weed which is considered haram. How should I stop her and suggest a dua so that I can pray for her and help her out. I want her to change and bring her to the right path.