Every woman, of course, wants her husband to be nice to her. Though if a woman doesn't "want to let" her husband be nice to his siblings and parents, either she is extremely selfish, or there is an issue or conflict occurring somewhere within the family that is causing her to feel this way. A woman typically appreciates it when her husband treats his family with respect and kindness. Especially his own mother, as how he treats her is recognised to be a sign or implication of how he will actually treat his own wife.
The majority have no problem with the husbands immediate family. The one's that do are insecure for some reason.
You would call your husband's younger brother a brother-in-law.
Brother-In-Law means a wife or husbands brother and its your husband or wife's brother
Your sister's husband is your brother-in-law.
No. Your husband's sister-in-law is either your sister or the wife of one of his siblings. If she is the wife of one of his siblings, she is not related to you.
Yes he had a brother name Charles Parks
You call your husband's senior brother simply a brother in-law. There is no difference whether he is a senior brother or a younger brother he remains your brother in-law.
Yes he had a brother name Charles Parks
The children of your husband's siblings are your nieces or nephews. Their children are your great-nieces or great-nephews.
When her first brother/husband died, she had to have another husband, because under Egyptian law a woman had to have a male co-ruler. She married her second brother in order to legally keep the throne.
Hera only had one husband and that was Zeus the god of thunder and ruler of the gods he was also her brother.
Your husband's brother's wife's niece may be the daughter of one of your husband's brother's siblings. That could make the niece your daughter, or your niece through your husband and another of his siblings. On the other hand, the niece in question could be the daughter of the brother's wife's sibling. In that case she is not related to you at all.