Actually, it's not phrased "sister mine", that I know of.
Instead, the French say ma sœur (my sister).
The online Google translator will show you how to pronounce sœur.
Gold mine in French is "mine d'or."
how to say 1 sister in french is une soeur
"Sister" in French is "sœur."
To say "big sister" in French, you would say "grande sœur."
You can say "ma sœur" which means "my sister" in French.
You can say "Moi aussi" in French to express "mine too."
You can say "ma soeur avait" in French to mean "my sister had."
I help my sister is " j'aide ma soeur " in French.
Ta mine maintenant
You would say "petite sœur" in French to refer to a younger sister.
Soeur.
Will you be mine? - Seras-tu mien / mienne ?