Okay, so we've got three paths. Each will have three sections controlled by the Tower Admins. Path 1 starts with Dahlia and has two others. Path 3 starts with Dreg and has two others. Path 2 is controlled by Alide all the way down.
I'd suspected that the forest path was associated with Dreg, and Dahlia's comments confirmed that. The grave didn't belong to Muna, but I think I was on the right track. Don't forget, Dreg was *previously* the Fairy King. A grave for a Monarch is likely tied to why is no longer in that position and resents the fairies. (Recall that on the forest floor Goma comes from, Muna made a bet with Dreg that if the Chosen didn't go to the fairy floor he could eat her. And he also planted that plant monster in front of the path there if I recall correctly.) I think the grave is to a predecessor and/or queen.
We've also gotten name reveals for the other Tower Admins. Lydia, who we met briefly two floors ago, is tasked with caring for the children of the Chosen and their party. We've also got three confirmed roles: the Mother of Monsters (in charge of the Tower's monsters), the Archmage (in charge of the magic given to the Chosen), and the Jailer (who holds the Chosen's prisoners and slaves.) Morgana is likely the mage, can't make a guess between Quincy's and Jasper's role. Their roles probably influence the challenges we'll face, since Dahlia's is about making choices that can likely weaken the Chosen's will with sex. (I'm also curious which of those three is the one we're supposed to give the Siren Queen's panties to, I wonder if Dahlia will tell us)
As for our next move... Trying to set up an ambush in the first chamber won't work. Dreg is there and will keep Alide from showing up, and even if we sent him away I doubt Alide would be stupid enough to attack us there when we've obviously had time to set up traps. Taking Alide's path is right out, she'll know we're coming and where we are. Of the remaining two options, I think Dahlia's is better suited for us to have to stave off Alide's traps and ambushes than Dreg's dark forest. It'd be nice to know which of the other domains we'll have to go through on each path before making a final decision, but I doubt we'll get that info.