Yes
Friends
She will be referred to as the sister of someone's brother-in-law.
Your uncle. If the guy she married is not your biological father, then his brother is your Step-uncle
carer
Your brother or sister.
If you got pregnant with you ex and then married his brother, then you kid will should call your husband dad even though he is no the real father.
Someone who does not want to get married can be referred to as single, unmarried, or a bachelor/bachelorette.
It doesn't matter if you like him or not, he's MARRIED.
Your husband would call her Niam Tij, so if she married the older brother, you can just called her Niam Laus.
No you cannot get legally married to someone who does not exists.
Your brother's wife would think of you as her brother-in-law and when wanting to get your attention will simply call you by your first name. If she is introducing you to someone she would say, 'This is my brother-in-law ____.'