verylittlecarrot - how if the infection was there three days previously would having a termination have prevented the infection from progressing? It would be the administration of antibiotics following termination that would have dealt with the infection, not the termination itself.
Using terms like EVER and ALWAYS are very strong; The antibiotics given at an appropriate time might have saved both mother and child theoretically, it would be impossible to state categorically that it would NEVER occur. In this case it could be argued that it would be a better outcome than the then unnecessary termination a wanted pregnancy. There are so many different possible outcomes. EVER and NEVER can be used to argue them all, there are exceptions to the rules in most situations.
The miscarriage became inevitable when the feotus died, prior to that it was still a threatened miscarriage. The likelihood for the survival of the feotus was always small but the lack of treatment of the infection was the probrable cause of death for both mother and child. You seem to be saying that the live feotus was causing the infection, it was the open cervix that was causing the infection, not the feotus.
There are two different situations: 1) where a feotus has died and a miscarriage is allowed to be prolonged, compared to 2) a live feotus and prolonged threatened miscarriage. These two situations receive different treatments and should be treated on a case by case situation.