They're free - floating labels — and very easily abused — unless they're rooted in a permanent order
of objective moral truth.
I think she actually stayed consistent in her primary belief, which was that there is such thing
as objective moral truth.
In what is called an abductive approach, the method is to look at the various secular and naturalistic ethical theories in a generous way, but then to show just how inadequate they are in giving grounding
for objective moral truth.
In short if natural justice exists than there is
an objective moral truth against which the moral beliefs of persons and cultures (including our own) can be evaluated as right or wrong.