Spoilers for crk update!
So my first thought was:
Witch who dreamed of a sweet paradise must be Witch of Light (First Cream cookie) and another Witch is the Prideful witch (First Egg Cookie)
From what we know about them it somewhat make sense.
Witch of Light wanted to make place free of corruption.
And Prideful witch seems to want to bring the Witch of Light back to here human form no matter what. Also the witch who wanted the cookies to worship them creating the cookie equivalent of hell/afterlife witch is important in lots of human religions doesn't seems too far fetched.
Would explain why the First Egg wants to bring the witch of Light and not the others. Imagen someone deer to you not only turned to cookie (who you considered a lesser being) but also lost all her memories (including the memories of you) of course you would try to bring the old her back.
Just reminder:
Fist Cream cookie is a lot of times compared to pure vanilla to the point some head canon/canon in there AUs of her being mother to pure vanilla.
And First Egg cookie has a lot's of parallels to Dark enchantress cookie.















