To say that a Jedi should have no possessions, the Jedi named the Dark Woman gave up her real name of An’ya Kuro to serve the force.
Over many years she trained students who were named as difficult by other Jedi, one of her pupils was a four year old Ki-Adi-Mundi needless to say this made her a outcast from the Jedi Order it was then that she took on Aurra Sing as her new pupil.
Later during the Civil War/Jedi Purge period Mara Jade told Darth Vader where she was hiding, Vader battled and killed her.