Meanwhile (a word which here means "not happening at all") in a precognition, Vanda Nossëo's explorers find Hell. It doesn't even slightly resemble any secondhand memories Ristrell picked up, except in that it's also located in a vast cave system. There's a vast tall sprawling city of stone and bone housing a decadent royal court that routinely hosts cannibal feasts (it's... okay? worse than expected? it's something, anyway, because their victims simply cannot die even of being eaten). The city is decorated with sculptures and abstract murals. The murals are painted in human blood. It's not clear that it's ruled by demons; it seems to be an unusually unpleasant human polity.
No, sorry, that's not where they would land. Can't imagine why the last precognition suggested that would happen. When they look into the future again, they see something else.
Vanda Nossëo's explorers find Hell. It doesn't even slightly resemble any secondhand memories Ristrell picked up, except in that it's also located in a vast cave system. There are glowing rocks and strange plants and it is definitely ruled by demons and the only other animals are - well, maybe they were all humans once? Each of them some number of humans? They're warped and terrible and exist only to be injured and broken and remade as a collection of pieces of art catering to some very inhuman sensibility.
No, sorry, that's not where they would land. When they look into the future again, they see something else.
This time, Vanda Nossëo's explorers find Hell. It doesn't even slightly resemble any secondhand memories Ristrell picked up, except in that it's also located in a vast cave system. Instead of sending them on, it traps them. At least some of the people there are lucid enough and friendly enough and educated enough to talk multiverse maps. There are safer places to try to aim for, or so they say, not nearly enough of them but some. There's Earth (not adjacent to Cube) and the Bastion of Peace (not adjacent to Cube, either) and the Dead Republic (likewise) and...
Here's this lovely totalitarian dictatorship on a beautiful desert island archipelago. It's adjacent to Cube and from there they can reach the Dead Republic, which isn't horrible at all, just a whole new world with over ten billion inhabitants for Vanda Nossëo to make contact with, and they know which of the several hells calls itself Purgatory. They have a brief summary of issues escapees tend to have - questions are bad, coming or going; names are fraught at best; they generally won't eat or sleep, sometimes won't drink; they're sometimes genuinely loyal to their demon masters. They think Vanda Nossëo should establish diplomatic relations with New Jerusalem.
New Jerusalem is going to be easy to get along with. It's mostly a vast grassland with a few very big cities. Food is free. Wifi is free. Some limited housing is free. They've dealt with refugees from hells before; they have a residential facility for refugees from the specific one in question. Their major problem is - well, they get all the dead babies. All the dead babies. And on their Earth people have souls from fairly early in pregnancy. But, hey, they've got a bunch of information about all the hells which they're not super interested in declassifying but will admit to having written down.
And incidentally the local magic is great at redirecting incoming teleportation away from private areas, the demons can be destroyed by Disappear magic or temporarily disabled by black holes, and the locals have their own way of going between worlds that seems to mostly or maybe only work in their own neighborhood.