Hi Vicki,
Sorry it took me so long to write back, I just saw your post. I tried your email at yahoo, but it says it is undeliverable. I started doing research on my family tree recently. Unfortunately, I do not know if my great grandmother had siblings. I placed an order through the family history for civil records in the town in Italy that she was from, so maybe I get more info. Do you know where your family is from? Oh, BTW, there is longevity in my grandmothers family too - she is 95! Hope to talk to you soon.