How dumb and arrogant can Susan be!?!!? It's hilarious

Yeah, and didn't she also plot and scheme herself into her own demise back in Korea also? So, it seems an irredeemable part of her character to think she's smart enough to manipulate everyone, she just isn't able to learn from her past mistakes!

And, yeah, a key difference is also that Adelaide has the advantage of having properly lived and grown up in both worlds.