Your brother's wife is your sister-in-law.
You may call her that when referring to her: ie. "That is my sister-in-law, Carol".
However when addressing her directly you usually may use her first (or given) name: ie. "Hi, Carol nice to see you again."
probably by her name
Sister In law
A hoe.
aunt
We call "Mami" to moms brother's wife.
In the English language there is no difference between the wife of an elder brother and the wife of a younger brother or of a twin brother. The wife of any brother is your sister-in-law. If you are actually talking to her, however you should just call her by her name. Nicknames are fine too.
sister in law
Shwe would be your sister-in-law.
Brother-in-law
Pick up the phone
errrr, no maybe nephew
Your sister-in-law.