On lines 91-104, Michael O'Neill comments:
In a way that is typical of Shelley's most distinguished poetry, the writing here sets going multiple frictions. The sense that words are inadequate to capture "The glory of her being" collides with an exhilarated intricacy that implies words can glimpse what it is that they wish to apprehend. Again, the impulse to absorb the particular (itself a category that the writing interrogates as well as ratifies) within some absolute ("that Beauty") provokes an instant swerve that establishes the absolute as at best provisional. (124)
We could also, in turn, reason self-conscious awareness of destabilized nature of his understanding of the absolute also absolves him from the charge of doing violence to the particular--Emily. But, as Adela Pinch would point out, the very attempt to think about the other implies a certain method of violence. Follow one or both links, which will take you to the page that contains some of Pinch's remarks on Epipsychidion.
O'Neill, Michael. Percy Bysshe Shelley : A Literary Life. New York : St. Martin's P, 1990.