Anyone out there have her2+ breast cancer in their family?

My mom, my 3 sisters and I start testing on us next month. Almost lost our mom to breast cancer in 09 ... Quite frankly I'm frightened.... And I look at my daughter whose not even 2, and I am scared more.

[Pray]

I was the first and only bc dx in my family. (Thank God!) Her2+ er+ 80% pr+90%

Father Lung cancer in remission. skin cancer nothing found in last 4 yrs.