The main one is in WLW in the Mop when she sees herself with the Eye in the pond fully pregnant, with a shaved head (this was before she shaves it in her attempt to "remind" Nil'giccas), and silver haloes.
Thank you!
This one I remember, and I took it as just her seeing her salvation. This is also the workings of the Eye, while Kelhuss's haloes are visible to people who are not armed with supernatural powers.
I just re-read the moment in the Umbilicus, and it also has the Eye open. Mimara sees "the blinding glare of
holiness" when she looks in the shield used as a mirror.
I don't think it's at all clear that we should connect those events to Kelhuss's haloes.
On the topic of the tapestry I'm not yet prepared to comment. I will concede, though, that in my first reading I just took it as a coincidence, since the imagery of pregnant women embodying holiness is so commonplace in our culture.
[EDIT] It's also important to note the way Mimara sees Esmenet's holiness and compare the wording to the moment with the shield-mirror in the same scene:
There she stands before her, Anasûrimbor Esmenet, the Blessed Empress of the Three Seas. Haggard. Palace-pale. A rose-silk sheet clutched to her breast ...
Dark with the writhing, straining shadows of countless carnal transgressions.
Glowing with the promise of paradise.