Ah, gotcha. In that case, I don't think Aradia would survive. Sure, she could defeat most foes in the Sinisistar universe but it probably wouldn't carry her all the way because I doubt her conviction. She sure as Hell doesn't have the mental fortitude to defeat an Otherworlder, nor does she have the blessings to counter their breed of magic. Sad to say, she's more liable to end up as a breeder than the sisters themselves because martial prowess is not the greatest strength there. Never was.
That said, I doubt the sisters would survive in Aradia's world for long either. With a bit of strategy they might be able to since they're capable archers, and sisters like Haanya are most certainly gifted in protection magic, so they have those advantages that Aradia herself lacks. So, unless they're overwhelmed by superior numbers or lose freedom of movement, they might be able to hold out. They're still boned if they're forced into melee, though. Even Rabiane will struggle there.
... then again, they do have that one blessing that makes it difficult to hold them down...