I recall that what EVA says is right (of course!). My mom got her first one at 34 and I started mammos at 24. Now I'm 39, have the gene and doing mammo's, u/s, and MRI's. Man! Now more about the insides of my boobs! Anyway, early detection is an absolute must.
And I recall all those stats BXM and yet again, yes, in your clinical world you are correct. BUT since you don't live with it, you don't know what is coming around the bend. Dr.'s that specialize in this stuff are saying that it is indeed passed through the mom, just studies haven't been actually published about it. More like word on the street but a very good street. If you aren't in our world, then you can spew out stats all day long but for us, we want to absolutely stay in the midst of the latest studies and findings. All of weeding out, sure. But when you also talk to breast care specialists and also my sister was at the Mayo clinic, you tend to listen to them over someone on the internet who is on the periphery of breast cancer.
So, back off my soapbox on that one.
Go to your dr. and make sure they are on the same bandwagon as you. If not, start hunting for another dr. If you catch it early enough, the less will happen to you.
Hang in there!

Average, for horses with some experience at this level