I've now read the letter attached to the Metro article and it does say it was arterial thrombosis.
They couldn't have stopped that happening and once it did she was at high risk of losing her legs. They are admitting they MIGHT have possibly identified it sooner but there is still no guarantee at all her legs could have been saved.
She was in a very bad situation which I'm afraid was of her own making and she will certainly have been warned many times of the risks of further pregnancies and it just comes across that she accepts no responsibility and insists it is all the hospitals fault over one missed check (only a missed 3am check is mentioned in the letter)
It's not that people who take ill advised risks will get worse care. The joy of the NHS is that they won't. The letter also mentions all the different teams (obs, paeds, ITU, surgeons, radiologists) who were involved in trying to save her and the baby.
NHS Drs, nurses and other staff have no problem treating alcoholics with liver failure, smokers with lung cancer or COPD or boy racers injured in RTAs. I never hear anyone complain or blame patients. It's just that it sticks in your throat a bit to actually get sued when you've struggled to save someone's life.