I don't think the WoL is turning into a primal. Primals have very notable characteristics which allow the Scions to tell very quickly and easily if something is a Primal. This is simply because Primals are big Aether Vacuums. They would notice very quickly if we were doing that.

More likely its linked to the Echo. The Echo by its very nature makes us practically unnatural. The we transcend the Barriers and limits of the soul. Theoretically we can probably do most of the stuff the Ascians can. The thing is I think we are gaining more control over it. Lets not forget with literally tore a Crystal of Light out of Garuda. We have been doing some pretty weird stuff for a while now.

As for J'talhdi, I think she has been suspecting since the whole thing started that things are changing and she was on a path that moved her away from normal mortals. I think it would disquiet her but she stays true to the path she is on because she believes in what she does and if she must change or even die to protect the world she loves, so be it. Doesn't make her comfortable with it though.