The Lich King concurs.I'm seeing a situation where the Elf Queen is still in control of the Queen's Wood but there are certain necromatic horrors still wandering around in there. The drow's copse is now a sight of blighted, twisted trees that seek to suck in souls and siphon them to the Lich King. There are treants that wander aimlessly, draped with rotting flesh and jangling bones. Banshees and rusalka haunt the rivers.
This all lead to the creation of the Wardens. One part Old West sheriff and one part Hero For Hire, Wardens are given wide mandates by the Elf Queen to wander her territory and deal with the problems created by the Lich King's incursion, as well as various other arcane horrors and twisted fey "humor."