It would have, she got septicemia from miscarrying. Failure to diagnose a miscarriage can result in a blood infection for the mother or sepsis. The doctors didn't intervene to prevent sepsis occurring when she was miscarrying even though her condition was worsening (which would be a right time to intervene and end the pregnancy), they said the foetus was still had a beating heart so they refused to terminate when she asked for one.
Many women used to die of sepsis from a miscarriage, birth or still birth, you don't hear it as much now.
We don't know that.
From the patient's reports of backache, it seems more likely that she had sepsis before the miscarriage.