I don't understand her meaning. It sounds to me like she thinks all transwomen have the same idea of "blessed womanhood". I don't know if that means an unrealistic ideal, but it seems pretty far fetched to me to assume everyone is going to have the same idea. I know it doesn't apply to a good friend of mine who came close to suicide, not looking for some idealized and unrealistic image of gender.
And I get that she is talking about shame, but in the first place, not everyone feels that way about their bodies, and I'd say many trans people have their own experience with shame.
But yes, I do find it weird that she'd use such a negative image as her idea of what makes born women different than trans women.
(edit)
Look, I am not trying to put down Greer. She is an important thinker and activist. And she is entitled to her opinion about transgenderism. But some of her assumptions around it aren't exactly on the ball.