How can blood clots in her lower pelvis 'suddenly' kill her... A blood clot induced heart attack or stroke could suddenly kill you, but there are no immidiately vital organs in the lower pelvis that you will suddenly die without.
They (and there must have been more than a few) broke off and flooded into her lungs. She drowned in her own blood, probably while she was asleep.
How can blood clots in her lower pelvis 'suddenly' kill her.
The news reports are usually scrambled, but most likely she died of a pulmonary embolism...blood clot, risk of which increases from birth control pills, went to lungs.
Of course, one can die of this from sitting too long in an airplane. Risk of death from pregnancy is not insignificant. Risk of developing breast cancer from later childbirth/nursin is greater. Birth control pills are sometimes prescribed, not for contraception, but for heavy periods, etc. That's life, a series of risk/benefit alternatives. Unfortunately, trial lawyers and ignorant people have figured out how to demonize choice/risk and make a buck from it...