Many force users seem to put themselves in to a category, light or dark. The Jedi are no different and you can only see the world around you in those forms. You've forgotten that there can be no light without darkness, and no darkness without light. I do not view the universe in such a narrow perspective. There is more to life than simply black and white, and even more to the force.
—Alia to Qui-Gon Jinn about her views.
Alia was a very old and very powerful force user that began training Anakin Skywalker in the ways of the Force.
Star Wars Chronicles
Star Wars Chronicles Volume I
Personality and traits
Powers and Abilities
Alia was very powerful and did not share the Jedi views on light and dark sides of the Force. Because of this she used both sides of the force to their fullest without falling into darkness.
Alia had a very close relationship with Anakin as she had helped to raise him from the age of eight. As Anakin got older she began to see him as a kindred spirit knowing the extremely long life he would have ahead of him.
This complicated things as her feelings towards him began to change as he got older. In the end to preserve Anakin and Padme's future, she left him and disappeared.
Behind the scenes
Alia is a character in the Star Wars Chronicles fan fiction series. Her appearance is based on the Actress Bridget Regan.