An inquest heard that Emma Gough, 22, lost more than four pints of blood shortly after delivering healthy twins.
She had signed an “advance directive” during her pregnancy expressly banning a blood transfusion because of her faith.
She died after up to five attempts by doctors to persuade the family to allow her to receive blood.
Afterwards her mother told one of the doctors who treated her: “At least she remained faithful to her God.”
Yesterday her widower, Anthony, 24, and her family were at the Shrewsbury inquest as a succession of doctors told how a transfusion would have saved her life.
Olufunso Oyesanya, the consultant gynaecologist on duty when Mrs Gough was admitted to the Royal Shrewsbury Hospital last October, said she knew about the risk of haemorrhaging after giving birth.
She had had a “long discussion” with colleagues at the hospital earlier in her pregnancy in view of her religion, which believes that the Bible forbids followers from receiving transfusions.
Her position remained unchanged at the hospital, he said.
Mrs Gough, of Telford, Shropshire, gave birth to a healthy boy and girl, but afterwards suffered internal bleeding, a relatively common complication.
The inquest heard that after an operation to try to stem the blood flow, Mrs Gough was taken under sedation to the intensive care unit.
Mr Oyesanya said he spoke to her mother, Glenda Delaney, and the patient’s husband, a central heating engineer, who “fully understood” that her “critical” situation could be rescued by a blood transfusion.
Mr Oyesanya said he was part of a “team” of medics and midwives who pleaded with them to reconsider a transfusion, before he made another approach later that night.
But the family, by now supported by a church leader, would not consider a transfusion.
After assessing Mrs Gough in intensive care he wrote on her notes: “Needs blood transfusion. Family still refusing blood.”
The family were approached a final time and their church leader told Mr Oyesanya they would not consider the matter.
“Somebody told me it was a conscience matter,” the doctor told the hearing, adding that he “fully respected” the family’s decision.
Mrs Gough died in the early hours of the following morning.
Professor Archibald Malcolm, who carried out a post mortem examination, told the hearing her refusal to sanction a blood transfusion resulted in acute anaemia, where the body has insufficient red blood cells to carry oxygen needed for organ function.
He said the cause of death was “profound anaemia” as a result of haemorrhaging due to complications in giving birth.
Nicholas Reed, a consultant in obstetrics and gynaecology at the hospital, who was not on duty at the time, said: “I think that if we had transfused at an early time, then a young, fit lady like Mrs Gough would have survived and I think all obstetrics staff would agree with that.”
The inquest heard that Mrs Gough’s family believed there was inadequate monitoring of her as a “high risk patient” not only carrying twins but unable, through her religious beliefs, to have a blood transfusion should the need arise.
Richard Daniel, representing the family, suggested that if she had received “urgent” attention much sooner, it might have negated the need for a blood transfusion.
When asked by Mr Daniel how long it had taken to identify the site of the bleed and repair it, Mr Oyesanya said: “The magic wand here was the blood transfusion. That was the crux of the matter.”
Mr Oyesanya said he no longer worked at the hospital and had taken up a position elsewhere.
The inquest continues.