Wiktionary
half-niece
n. (alternative spelling of half niece English)
Usage examples of "half-niece".
So it could have been Esther's husband Kasei, in which case Diana was Jackie's niece, and John and Hiroko's great-granddaughter-or else it could have been Peter, as many supposed, in which case she was Jackie's half-niece, and Ann and Simon's great-granddaughter.
So it could have been Esther’s husband Kasei, in which case Diana was Jackie’s niece, and John and Hiroko’s great-granddaughter—or else it could have been Peter, as many supposed, in which case she was Jackie’s half-niece, and Ann and Simon’s great-granddaughter.