Nikaah & Marriage Issues

Hurmat-e-musaaharah becoming established through touching a woman with lust

Q: I had read that hurmat-e-musaharah take place only if there was a lawful relationship. I just saw a post that if a man committed zina with a women he cannot marry his daugther. But if he wasn't married to that women and was mislead by shaitan.

Below is what I found.

On the other hand Imam Shaafi (rahmatullahi alaihi) is of the view that hurmat-e-musaharah is established only through lawful intercourse and not through unlawful sexual intercourse or touching.

Woman thinking of her father in-law

Q: If a woman thinks her husbands private part is her father in laws private parts or thinks they maybe similar to her father in laws private parts, and imagines her husband's private part and maybe also imagines the father in laws. Whilst having these thoughts (she hasnt actually seen them nor does she wish too) does thinking and imagining this affect the nikaah of the woman and her husband. She obviously knows her husband's private parts are his but she just got the thoughts explained above.

Bringing children from one's first wife to spend the night with one in one's second wife's house

Q: I have made up my mind to take a second wife. I have four young children from the first marriage. I am concerned about not being able to spend enough time with the kids to participate in their tarbeeyah as I am a busy doctor and usually come home after Maghrib. Can I keep some or all of my kids with me when I am spending the evening and night with my second wife?

Father in law seeing daughter in law's chest

Q: A woman's husband's parents are sleeping in the same room as the woman (their daughter in law) and her husband (their son). It has been almost 3 weeks and the daughter in law is very annoyed as it is an invasion of her privacy and her parent in laws should not be sleeping with her and her husband.

The woman and her husband sleep on the bed whilst her husbands parents sleep on the floor with a mattress. So the woman and husband are higher from the ground than the parents.

The woman (daughter in law) was laying on her side and the husband (son) got up moving the duvet. It was unknown that the father in law was sitting upright on the floor mattress to which he would be able to see the woman and her husband on the bed. Whilst the woman was laying on her side, her right side of her chest, the skin/flesh of her right breast was exposed. Only the skin was exposed and not the full breast. The father in law uinintentionally looked and then quickly lowered his gaze, he shouldnt have been looking in the first place to be honest.

The woman told her husband and he said that his father wouldn't have seen it, he has weak eyesight.

If the father in law had looked at the skin exposed does hurmate apply and affect the nikah of the woman (daughter in law) and her husband (son)?