[@Vec] I doubt Ilunabar can find the place from spying dreams alone.

She found Arcon because it was in the normal universe, therefore its communication with The Raka is a bit easier to track. With Ull's personal plane all she can probably see is that it comes from beyond the normal universe.

The exception to this is the wolf waifu. But in that case, I guess Amartia could be the one directly interacting with her.