I was reading your post and I think the niece you are talking about is my mum. My mother was born in Sa'a Saai and brought up by her grandmother in Sasina and went to school in Safotu. When her grandmother died she went to live with her uncle Sa. Then later she went to New Zealand in 1962, she was born in 1943...my mum is still alive, she is 70 years old now. Her name is Fuapepe (Pepe for short ) Tusipauna Simei (family names also include: Vagana, Sa, Simei & Vaafusuaga) my grand mothers name was Talaitupu O Samoa Vaafusuaga and she had seven children Fuapep, Talatau, Sofai, Ieremia, L'ia, Po'o, Fa'amuli (five boys & two girls) her married last name was Fauatea.
My great grandmothers name was Fa'afiatauli Vagana Simei...my mother was the oldest child of Talaitupu, my mother is probably the oldest living relative since my grandmother passed away.
My grandmother Talaitupu, married and brought her family up in Satufia, Satupaitea, Savai'i, Samoa.
I would appreciate any information. Thank you