That's exactly what it is, a totally different mindset. One that is irreversibly logic/reason-proof. For example, I have intel that OM is pushing her away a bit (perhaps it's the "forever" talk from a married woman with two kids). Does this show my WW "the light?" No, instead she blames me for creating her barriers to OM (e.g. blaming the kids).
I'm finding there is no simple answer to this - I have to let her go and follow her own path. The hardest part is gathering the strength to start that process by following my own path.
Me: 30 W: 25 D4, D1 Undiscovered EA/PA since 6/2014 BD: 2/6/15 Living together - in limbo