Letter to Paul Porter

The letter to her nephew, Paul Porter, on pages 213-216 is interesting if we are going to talk about her politics today...She discusses WWII and all the points at which it could have been prevented. But then--this surprised me--she claims that she "believes in our form of government, [that it is...] the best ever devised in human affairs, in spite of the abuses, in spite of the perversions that have deformed it in practice" (215). She also goes on to say that after the external war, there will be "a second war to be fought here afterward with the internal enemy."
I think this adds some interesting depth to the political concerns we've already mentioned, especially the fact that she actually believes in something to be salvaged: indeed, Pale Horse was published only a few years before this letter, as KAP was presumably watching the gathering storm of WWII. So does her belief in our form of government add a new element to our understanding of the total disillusionment written into Pale Horse Pale Rider?