there does seem to be at least an implied comparison between her and the woman who is the "you." If one is a "beautiful mild woman," the other (presumably Maud Gonne) is perhaps a beautiful fierce one. Perhaps there is a mild rebuke to the beloved that if only she had been a bit milder herself, things might have worked out better, although if she had been milder, perhaps she would not have been so loved.

Yes.

And yes, "Adam's Curse" was written, I think, when he was 37. But even years later, in writing "A Prayer for My Daughter" he said --

An intellectual hatred is the worst,
So let her think opinions are accursed.
Have I not seen the loveliest woman born
Out of the mouth of Plenty's horn,
Because of her opinionated mind
Barter that horn and every good
By quiet natures understood
For an old bellows full of angry wind?