Hill wasn't very concerned about the feuds and grudges of Shady Home, after all, the queen, even if furious at Oberon detaching from her sphere of influence, wouldn't dare extend that resentment to Hill.
She was indeed very powerful, but this strength was limited to the Joyous Court, once she left the throne of the Fairy World, her power was no greater than Valkin's.
Just like the Void Dark Queen of the Court of Sorrow and Rage, the Divine Artifact she and Rose created together caused more damage than her own abilities.
The Court of Sorrow and Rage was indeed more terrifying, but as long as one didn't enter her sphere of influence, even a commoner would be unharmed by the queen.
The story of Alice in Wonderland, for instance, indicated the capacities of these Fairy Courts; even a little girl could escape unscathed as long as she could get away.
The little fairies would all leave Toril along with the deities because they were inherently weak.
