Don’t know what their explanation will be, but they could do something like “Hades (the underworld) looks differently to everyone who enters it; so for our SB gang, it looks like a destroyed SB’
So if that is what SB gang sees, what is UW SB to the people that are there? I mean Milah is dressed like normal clothes, working, is she really, really there or they are representations of the SB gang fears, of people they had connection in the past? But then again why would Emma see Milah, they dont appear ghost, at least not like the type of ghost we see in movies that can cross walls and not having a body u can touch. Again, questions they wont answer with actual logical answers bc as long as some character explains where the SB gang are, they are expecting the GA to actually go along with it and they are probably praying that the fandom and media dont point plot holes and lack of continuity if previous storylines.
"I offended you with my opinion? Ha, you should hear the ones I keep to myself".