New Muslim publicly professing his Imaan

Q:

1. Is it necessary for a new Muslim to publicly profess their Imaan?

2. Under what circumstances will it be permissible to hide one's own Imaan?

3. If a person dies hiding their Imaan, how will the Muslim public ascertain that this person was a Muslim? For example, if a person continued to live with their non-Muslim partner; did not dress as a Muslim; did not make a request for a Muslim funeral and did not change their name, would this be sufficient evidence to not classify them as Muslim?

Questions relating to the graveyard

Q:

1. Can I recite darud sharif while walking through a non-muslim cemetery?

2. Can muslim sister allowed to visit there parents grave once a week, every week?

3. Are we allowed to grow small plants on our parents grave?

4. Are we allowed to put fresh flowers on our parents grave?

5. Are we allowed to clean and tidy someone grave next to our parents grave?

6. Are we allowed to play any surat on our phone at the grave of our parents?

7. Are we allowed to put extra soil on top of the grave, because original has sank down?

8. My parents grave soil is flat, but I see some grave soil is shape like dome are we allowed to do that?

9. I heard that on Thursday maghrib time the dead person's rooh comes home till Friday. Is this true?

Marital problems

Q: I have been having great problems with my wife the last few years. She separated herself from me because of her mother telling her and the last few months she came back and we have been trying to reconcile. She's very disobedient and always fights with me but we have a child so I have tried and tried with her. When we were separated, she and her mother disrespected my mother and my father and now my family don't want me to reconcile because of this. Also she kicked me out of my home three times. I made an agreement with my wife that I will go back and live with her but I want her to sort things out with my parents just an apology to break the ice. My wife refused and just left and has completely cut me off. I want to know is this wrong what I asked of her. I do want to reconcile but know she doesn't want to anymore. I don't know what else to do. My wife only let me see my son the last few months after years and now she is doing the same again. I don't know what to do. Can you please help me.