Hi @Sister, I have had an experience with a genetic researcher through my sister 3 years ago and a rare tumor she had in her ovaries.
She did not have any cancer genes and apart from asking my history I was not tested.
Unfortunately like you,we did not know any family history apart from our parents and an Aunt and Uncle which were not Cancer related deaths
They were not able to tell us anything because there was not a lot of history.
She didn't pay ,the Randwick's Womens hospital in Sydney referred her to them.
When I got diagnosed, my sister sent them an email with my diagnosis asking is this related, they said "unlikely, however can they get access to my results"
I have mixed feelings about the whole thing , as it did not give us any more clarity and three years later I was diagnosed with BC which according to them is not genetic.