She is extrapolating from her own situation to apply to everyone else's. Because she was diagnosed fairly young, and her cancer was caught early and was treatable, she wants to spread a message far and wide that young women need to get screened like crazy for breast cancer--as if it were more a young woman's disease than an older woman's disease. I'm afraid she's going to frighten a lot of young women who are already over-messaged to death about breast cancer into thinking that every little lump they find is cancerous.
Do young women get breast cancer? Yeah. For that reason they should not allow their doctors to pooh-pooh it when they have a real concern about something they find. But should young women be getting annual mammograms? No, at least not from what the experts say. If women started getting annual mammograms at, say, 21, we'd probably see a whole lot more of them with breast cancer by 45 from all the radiation exposure. Breast cancer is still primarily an older woman's disease, and it doesn't make much more sense statistically to screen younger women annually for it than it would to make men get annual mammograms at ANY age, even though they can get breast cancer too.
I think she's at a stage right now where she looks at any recommendation for fewer mammogram screenings as something that's going to cost millions of women their lives. I'm not convinced she's right, and neither are people like these at Breast Cancer Action:
http://bcaction.org/index.php?page=does-mammography-screening-save-lives-let-s-talk-about-itI don't even know why, in this clip, mammography is being classified as "preventive." There's not a mammogram in this world capable of PREVENTING cancer. All mammograms do is detect what's already there and possibly provide more time and treatment options. That's all they CAN do. They don't prevent cancer. We need to get this notion out of our head that "early detection = preventing cancer" or "early detection = curing cancer."