YOU SAID:
Niana is cute and very cute she is my baby sister
INTO JAPANESE
Nianaはかわいい、とてもかわいい彼女は私の赤ちゃんの妹です
BACK INTO ENGLISH
Niana is cute, so cute she is my baby's sister
INTO JAPANESE
Nianaはかわいい、とてもかわいい彼女は私の赤ちゃんの妹です
BACK INTO ENGLISH
Niana is cute, so cute she is my baby's sister
That didn't even make that much sense in English.