Nikaah & Marriage Issues

Q: If a father in-law hugs and touches his daughter in-law with clothes and kisses her hands prior to her refusal, is the nikkah valid with her husband?

Q: A Muslim man leading a happy married life, but out of sympathy want to marry another widow woman, and give her a life, but he is doesnt want his first wife to know immediately about his decision of taking up another wife, but later on after an year he would slowly let know his first wife know about the second marriage, so is this cheating? Will his first wife curse the second wife? Should this widow marry this man? Is she becoming a reason of pain for his first wife?

Q: What should be done when a baby is born?

Q: Who asks for the dowry, the bride or the parents? If dowry is the right of the bride, can the parents disagree with her if she accepts less mahr?

Q: What are the responsibility (HAQ) of husband over wife?

Q: Is there any special virtue recorded in the Hadith regarding attending a nikaah?

Q: Can one consider it as a great blessings of Allah Ta'ala if he gets a chance to conduct his nikaah in Masjidul Haraam?

Q: If a man is going to sleep and only thinking lustfully about a woman and gets an erection, can he marry the woman's daughter?

Q: My sister in-law has gone with her 6 month old son to her parent's house for a holiday overseas. My brother had gone to leave her. Is it permissible if my father (her father in-law) picks her up and brings her back home and be her mahram if her husband is tied up with work? Also, is her father in-law allowed to be her mahram when travelling?