God's fault.
"But then she remembered one she'd read about before, one that she was trying hard not to think about. Gail had an abortion when she was 18."
Looks like George Bush might know how God must be feeling about this one...
There are plenty of women who have abortions and don’t get breast cancer, and plenty of women who get breast cancer and never had an abortion.
There are infertile women who are more likely to lose a pregnancy when they do conceive - and thus more likely to have breast cancer later?
Is God out to get them three times - infertility, pregnancy loss, breast cancer?
God may help us cope with what life deals us, to haul what grace and meaning and redemption can be gotten from loss and suffering - but I don’t believe the accidents of life have much meaning, and sometimes the accidents carry us away from God.