Given that her private views on any of the matters you describe are and always have been unknown, and are attributed to her only by speculation, it's difficult to know whence derives your certainty.
she approves of Socialism, power inherited by bloodline, and a society choked by class structure.
Not easy to see how somebody could 'approve' of all three of those things simultaneously without standing on her head - and she's getting a bit old for that.
Most Americans couldn't understand how Britain suffered from the ravages of the war or how many sons she lost or what may have motivated her political leadership to devise national health, government subsidized jobs, etc as a result of the war. Food and fuel were rationed through 1953 in the British Isles.