Entwives going West?

[Puddleglum]

Originally Posted by Mnemosyne

Souls are only confirmed for the Eruhini--Elves and Men.

I'm not so sure. Dwarves, we are told, were given "a life of their own" by Eru who told Aule "Even as I gave being to the thoughts of the Ainur ... so now I have taken thy desire and given to it a place therein."

That could be ambiguous, but almost immediately Eru refers to the Dwarves as "the children of my adoption" suggesting that they had Fea as did Men and Elves - tho their fates may well have been different from both.

Later in the same tale (Of Aule and Yavanna) Manwe tells Yavanna (referring to Ents)

Eru hath spoken, saying ... When the Children awake, then the thought of Yavanna will awake also, and it will summon spirits from afar ... and their just anger shall be feared.

It seems clear from that last that Ents do have spirits (Fea) like the Eruhini (tho Ents would then also be children of Eru's adoption, similar to the Dwarves.

One other item to consider. The Music didn't (and was never intended to) tell everything as in this quote from Ainulindale

To none but himself has Illuvatar revealed all that he has in store, and in every age there come forth things that are new and have no foretelling, for they do not proceed from the past.

So it would not be inconsistent if Eru DID decide to add new incarnated beings (with Fea).