ma'at figures prominetly in both the negative confession and tthe roughly contemporanous tale of the eloquen peasantis it the same ma'at
Here’s the low-down on Ma’at. Ma’at was the feather of truth against which the human heart was weighed. To the Egyptians, the human heart was equivalent to the soul. Upon entering the Great Hall and in order to pass on to the afterlife, a person must have their soul a.k.a. heart weighed on the scales of truth. The feather of Ma’at represented all that was good and truthful. If the person led a good life a.k.a. recited the Negative Confession and the scales balanced, they were free to pass to the afterlife. If, however, the scale tipped and the heart hit the ground, the person did not live a "truthful and good" life the crocodile headed god Sobek would rise up and devour them.
The Eloquent Peasant is a contemporary work of Egyptian Literature by Richard Parkinson. It appears that this author is using the principle of Ma’at to base his story. I would say yes, they are the same Ma’at because Parkinson’s story deals with seeking the truth and justice. Again, Ma’at to the ancient Egyptians was just a symbol for the idea of truth and justice.