Your wife's sister is your sister-in-law, but you would refer to her by her first name and introduce her to others as your sister-in-law Pat (or whatever her name is.)
And after your divorce - she is your ex-sister-in-law.
Your husband's younger sister is your sister-in-law. His older sister is also your sister-in-law. In English, we do not distinguish between the two.
However, when speaking to your sister-in-law, you do not address her by that title, but merely call her by name.
Your husband's sister is your sister-in-law. If he has more than one sister, they are your sister's-in-law.
The husband of your wife's sister is your wife's brother-in-law, but is not considered to be related to you.
Your wife's sister's husband will be called your 'co-brother'
Your wife's sister is your sister-in-law.
you call her your daughter's husband's sister
Your brother would call your husbands sister by her first name. Or, "my (sibling's) sister in law.
brother in law
Mom
Sister-in-Law
I think that you call them your cousin in law because its pretty much the same concept as a sister in law... its your husbands cousin so it would be a cousin in law
sister in law
Your Sister-in-law
No. An Uncle is the brother of either your Mother or Father. You're kids may call him 'uncle'
You might want to call her sister-in-law, even though to the best of my knowledge there is no officially designated relationship for this situation. But I am certain that she will be very happy to be accepted with the above designation.
I would say aunt in law. If I'm reading this right, you were introduced to your mother.
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.