Marcia,
I am so sorry for your aunties diagnosis and the loss of your dear friends.
Like Becky I am BRCA 1& 2 negative with significant (mom and 3 aunts & 2 cousins ) family history of BC. I would suggest that you contact Myriad and speak with one of their genetics counselors.You may want to ask if the status of your variant has been reclassified as deleterious or not. Just to be on the safe side. Also I can see what i can find out for you about the availability of genetic testing, (perhaps in the research setting) may be possible in S.America.
I understand you and your familys' concerns,
Warmly,another Marcia
http://www.bracnow.com/understanding...ain-do-now.htm
for more information on BRCA
http://www.facingourrisk.org/