I've Seen People Talk About How They Think The Shadow Of The Erdtree DLC Does Or Doesn't Completely Butt

I've seen people talk about how they think the Shadow of the Erdtree DLC does or doesn't completely butt heads with the lore of the base game and one example of it doing so is Marika being from the Numen in the base game and the Shaman in the DLC... I've also seen someone mention they think maybe the Numen are descendants of the Shaman but honestly? What if Marika just lied? Like she very well could have - she clearly doesn't want anybody knowing about the Shadowlands, and admitting that she hails from there would definitely hint to it's existence. So maybe she lied, and the base game just lies with her, never even bothering to hint that it might be false.