Hate to tell you, but I and millions of other breast cancer folks never had abortions. And don’t try to tie it to birth control pills, either. Just from personal experience, that wasn’t a factor either.
My wife died from metastatic breast cancer in ‘08. She was of English descent on both sides. I seem to have seen some similar report earlier. I have to wonder if there’s a genetic link at work. Several relatives including her mother also died from this.