Great fic. It's good to see what you've done to it since I last read it.
The origin of the mirror still feels contrived to me however. But there may
be a way out. When I read that part, for some reason, I thought Keiichi
found the tree and got it turned into the frame. I had to go over it again
before it became clear.
Actually, I think that would have been a good way to handle it rather than
the roundabout route you're using.

Next, 1 little glitch:

The force-bolt, instead of hitting the owner of

the voice, blasted the mirror, turning the frame to so much
splinters and dust.<<

But then...

In her distraction, Belldandy let the force bolt dissipate a little too

quickly. No one
was harmed, just the mirror The glass shattered and the cherry-wood
frame turned to ash. <<

Now, how can she blow up 1 mirror twice, eh? Looks like you ocerlooked this
when you were rewritting. Actually, I feel that the second one is better.
When she arrived and ran out of the room, I can't see her pointing back to
the mirror in any way. It just isn't likely.

One last thing. The first time I read this, I had a disturbing vision.
Facing Belldandy is Skuld, psychotic and raving, "You belong with ME! Not
Urd and certainly not Keiichi."
Read this fic again brought it back. I leave it to the readers to speculate
what precipatated this scene.
Like I said, good fic. You should be proud of it.