That is very helpful actually!
I'm still considering giving her both. I do lean towards her being destructive because of the nature of the world and the original creator who had malevolent intentions in creating the original gods. The original gods possess pieces of the creator's, Lins', power thus creation, destruction, knowledge etc.
But I also really like the idea of the dual power. I think the only reason I hesitate is because I'm not sure what to give Solum. What's interesting is, in one of the societies of the world women don't have any political influence but have a very strong military presence so maybe I could tie that in with women being seen as more capable of destruction? Ach I'm so torn.
The deal with Diu and Solum's relationship was that in the original version Diu and Solum were the first beings (I think. It was a long time ago) and Iseo was their child. This just evolved into what it is now which I'll explain later which led to all four of them (Diu, Solum, Iseo, and Moukib) all being siblings. I suppose I could keep their union the same because, really, all the gods are related so there's no avoiding it.
There is a lot more to the mythology and pantheon of this world so I'll explain it a little bit better.
There's a sort of tier system going on…
Tier 1:
The original creators of reality. Lins (the world (mythology says that he slumbers in the centre of the world), magic which is believed to come from the core of the world, the creator of the first gods) and Duns (the sun (he was trapped in there by Lins), the world ender). These guys are considered to be forbidden or lost deities in a way. They're brothers but enemies and it was a battle between them that prompted Lins to fortify himself within the world, Korrei, after creating Moukib to store his knowledge and the moons who were made to protect him if Duns escaped his prison.
Tier 2:
The first gods, in order of oldest to youngest. Moukib, Diu, Solum, Iseo. The last three are the three moons of the world. They appear at different times. Moukib was banished a very long time ago.
Tier 3:
Reserved this spot for Mortessorem, God of Death (or of the dead I suppose, he's a bit like Hades in that way), Keeper of the Void (the afterlife), because he's cool. He was created by the moons. He's also the most noble and 'good' of pretty much all the gods.
Tier 4:
Other gods created by the moons. They vary depending on power. There's a lot. I think I was a bit inspired by the ancient Mesopotamian beliefs where there were lots of minor gods for little things and the more widely known gods who had a more general purpose. One of them was created by Mortessorem though (haven't settled on a name yet but she's the Goddess of Souls and the Harvest (like harvesting souls heh but also crops. she's a newer concept))
Tier 5:
Spirits. Manifestations of time created by Iseo (the seasons etc).
I have been thinking about things like space and matter and whether that could possibly be a good substitute. What the original gods are, are the foundations of reality. So the mind, conscienceness, time, creation, destruction. I think once I considered things such as light.
So I am really liking Diu's dual powers after what you've said I'm just still not sure where Solum fits in.