Bollocks that Fathers side didn't count. If he had the gene he could of past it to you. 50% chance. That's why we have genetic counsellors. If they don't think it's not a risk at least they explain why. My father lost 3 sisters and a mother and 2 nieces to ovarian cancer and/or bc. They were convinced I had that gene because of the age they got it...around menopause. My sister also had bc but we had diff Dad's. They were looking at my Father's side only who were in Scotland.
My sister had been tested as her daughter developed bc also but they were neg to all known thus far. The genetics people believe we have a gene just not one known of as yet. But at this stage I am just considered an unlucky 1 in 8. Each time a new one discovered they retest my niece, the last retest was after I queried the newest gene for risk and they recalled her for testing again. But no. Still a mystery.