Yeah, if Skuld gets in I don't have it much better. XD Native language is probably whatever the Almighty speaks to them in, second is presumably Norse but as far as I can tell we never see her speak it, obviously she's very fluent in Japanese (which is getting claimed as her main language, just to be somewhat consistent!), and logically she should at least speak Latin, Greek, and probably a few others as well...

At least considering her canon, I can pretty much treat all her abilities as software upgrades!