I am of the opinion that we have to choose between two evils here - one, allow the already shattered innocence of an eleven year old to be even further ruined by having her traumatise her body and mental state giving birth to a baby conceived from an incestuous rape, or two, deny said baby a chance at life to preserve whatever innocence the girl has left. Considering that it is unlikely the baby will survive to term anyway, I believe it has to be the girl whose interests we choose to act in, not those of a baby that should never have been conceived and is likely to die in any case.
We will probably never be able to reach a conclusion that is 100% "right", however, I believe there is one option that is overall better than the other. TBH, in light of what has happened to this girl I do not care about the baby.