Morgana is The Queen of the Earth Faeries or Faeries in general. All her subjects show her loving submission but many might not agree with her methods of approach for example Nebula her second in command. When the war with the WIzards of the Black Circle began she fought them on her kingdom of Tir Nan Nog and before she was sealed escaped to earth where she met Roxy's father, Klaus, and they fell in love, were married, and shortly after had Roxy who Morgana new was a fairy and the Princess of Tir Nan Nog. When the Wizards of the Black Circle sensed power coming from Gardenia that was Winx Fairy Magic they followed and to protect Roxy Morgana allowed herself to be captured by the evil Wizards bringing about the downfall of the Faeires of Earth without her leadership.
For years she was able to watch over Roxy and her husband telepathically to make sure that they were well but could not be with them physically. When the WIzards reappeared in an attempt to capture the last fairy of Earth Morgana used her magic to help Roxy believe in her WInx to become a fairy. Morgana also helped Roxy to understand her powers as a fairy of Animals and Earth and the power of the White Circle, which contained the magical powers of the Earth Faeires.
When the Winx Club arrived to Tir Nan Nog to help save the Faeries from The evil Wizards and freed them with the help of the White Circle. Morgana was more than outraged with the fact that when Faeries roamed the earth humans revered them and after the Evil Wizards trapped them they were all but forgotten and left in children stories. With the prodding from Nebula she contacted Diana and Aurora to wage war on humans...a vendetta.
Morgana was moved by Roxy's feeling to make peace between the humans and Earth Faeries and slowly attempted to stop Nebula and the other Earth Faeries. But Nebula trapped her in a Magical mirror in the Tir Nan nog throne room to usurp her power. Only Roxy could free Morgana because the after regaining her memory remebered that who Roxy was, although she knew there was a strong bond. The reason she did not remeber was because of the Wizards of the Black Circles imprisoning of her which made Klaus and Roxy forget of Morgana and the same thing happening o Morgana.
When the Black Circle was defeated Morgana elected Nebula to replace her as the Queen of The Earth Faerie (maybe temporarily) so she may return to her husband and daughter after restoring Klaus's memories.