Well, I call her Abigail, but different strokes, etc.
you call her your daughter's husband's sister
brother in law
Its would be your neice
Your daughter's husband is your son-in-law.
yes
Daughter in law(
Your brother would call your husbands sister by her first name. Or, "my (sibling's) sister in law.
Smileyz
Yes, she has a daughter Vanessa and Son Troy and an adopted daughter LuLu
Yes, it should be, it is not considered incest because it is not by blood. You are marrying your aunt's HUSBAND'S daughter.
Your cousin in law
its simple dont you see its ya mum yaaboo!