At the time of the Brenebourne novels, Roxannadrell is on the Fairy Throne but her ancestors snatched the realm from the control of the witch clans over 1500 years previously. Not only did this guarantee poor relations between the witches and fairies, when Great Granny Queen Gwendolyn married a wizard, had a child with him and then dumped them to move on to someone new, they went over to the dark side and continued the hatred leaving the Chief Witch to inherit from her grandmother and mother a bloody thirsty wish for revenge. The royals have brought some kind of democracy and stability to the realm in a way the witches would never have done though. The witches generally feel the fairy royals bribed the realm with this so the people accepted them.
Over the millennia, the dark magical forces launched many attacks on the fairy forces. While the latter always defeated these attacks, eventually at least, there were enormous casualties on all sides. This has led to a hardening of royal attitudes towards the Witch. Nobody wants to see history repeaitng itself. Fairy Kingdom history has been far too interesting, and as a result harmful, for anyone with sense to see any of that happening again. But there is a fly in the ointment, someone who doesn’t take the official line at face value, who questions things and who is too powerful to get rid of - Eileen!