I'm not sure she really believes pure communism is possible or desirable, but as I said it is ingrained, and she will reflexively defend it with the "more evolved humans" concept when she perceives it challenged. Like most people, she doesn't give much thought to politics or broad social issues except when they directly affect her or her family. I am aware that she thinks the sent-down youth system was horrible and sad, and that the current lack of freedom of movement is problematic (for those who don't know, for most people in China it is almost impossible to move to another city to work/live). I try not to engage with her in any discussions about China, as these topics are minefields, so what I know is through observation rather than probing.
My wife has been here for 18 years, was PhD-educated here, has been married to me for 16 years, and she still says "we" to mean "all Chinese people", as in "We don't think X" or "We like Y very much". My parents tease her with "What do you mean 'we'?" when they hear this. I suppose she means "all Han Chinese", but you get the point. The difference in individual vs collective thought and opinion between China and the West is striking.