So, I was asked to comment here and don't have the faintest idea about the verse.
So I'm gonna go by what has been given.
First, the dualism vs neural monism. That entire thing sounds like taking a plenty vague statement and reading a lot into it.
For a start she is talking about Mary's Room, not her own subject directly. What she states is that the (suggested conclusion of the) thought experiment of Mary's Room stands between dualism and neural monism. Dualism in this case is probably supposed to mean the splitting of physical and mental into entirely different things.
Mary's Room on one hand suggests that physical and mental are different things, as Mary can gain new experiences despite having complete knowledge of the physical. So it rejects pure neural monism.
And I suspect the author of SMT also considers it as not following a pure split of physical and mental, as in the thought experiment mental experience is brought about by the physical.
So, what I think is meant, is that we are talking about a theory that is a middle ground between to other theories of the relationship of physical and mental. One were mental and physical influence each other, but are not completly the same either.
Of course that's just one interpretation based on very few context, but I in any case believe that without a clearer explanation interpreting this as non-duality would be hasty.
On to the second scene. I don't agree with the idea of something existing above pluralism here. I'm fairly sure what the series is trying to tell you here are that the things, of which she in the following conversation explains to be all the same thing just in different manifestations, are all the same thing just in different manifestations. Not pluralistic is meant as in not multiple things, but the same thing.
So, I think, this means something like
avatar creation, not transduality.
