You're really enjoying this recent kick on metaphorical/literal becoming one, aren't you?Zarathustra wrote: In The Chronicles of Thomas Covenant, the literal is the real world (and its characters), while the metaphorical is the Land (and its characters). For She to realize that She is Joan would be comparable to shattering the Arch of Time, because it would collapse the distinction which is holding the real world and the Land separate. For most of the Chronicles, we could assume that the separation between the two worlds is metaphysical within the story itself, because of Covenant's Unbelief. But it is merely metaphorical, and all it would take for that to become an explict fact would be to admit it in the text ... in other words, to reveal that She's name is a character from the real world.

But...I think in effect one of the central conflicts/dangers in the worlds is due to what you propose being/becoming true. If the worlds have any chance of surviving...or even a fragment where beauty is possible...the metaphorical/literal must, literally remain separate. If LF/TC are one [or SHE/Joan]...still the mystical/mysterious identities between the worlds have to remain mystical/mysterious. IF the externalized LF/TC in the Land becomes an internalized LF/TC unity...or the opposite...the internalized "despite is part of me" of the real world becomes an externalized thing in the real world...that is the eternal ending without hope.
It's ok, for instance to say a physical triangle and a mathematical one encompass each other, are the same, in one way...a way that is less than literally so, but more than just metaphorically so. BUT to somehow put a physical triangle into the mathematical realm, or vice versa, something HAS to break.
And, as a speculation, I think this is at least part of the reason/necessity for the real world characters to all be dead in the real world.