17. How does this deity relate to other gods and other pantheons?
I’m not sure she does. The other pantheons seem to give some of her jobs to male deities. And there is no other goddess with those tasks ascribed to her. The only other being that comes close is the saint the church forced her to become and then she lost some of her tasks. Greek Muses might have come close but they have their tasks divided between many, not embodied in one.
There is no mention of her being married that I can find, she is always whole unto herself but nothing states she is a virgin either except in the original meaning of the word that had nothing to do with virginity but did mean she didn’t need a man to be herself. There is one legend that she was married to an Irish king and had three sons, but that isn’t mentioned in any of the Scottish stories and not told often in the Irish ones which makes me think that someone was trying to curry favour with that earthly kings family more than part of actual lore.
So, no, I don’t see her relating to other gods and pantheons.