Hitomi was now 14 years old (well, technically 9 but because of the aging jutsu she looked, acted, and thought like a 14 year old. She always went by her physical age rather than her calendar age.) While she was living in Kirigakure, her parents were killed in an accident caused by some internal village conflicts (they seem to have a lot of those, with clan feuds and the Akatsuki and all...). So she decided to leave Kirigakure to find another place to live. Her parents never had the chance to tell her the truth about her past before they died. They never told her to stay away from Konoha.
That's where she was heading.
Hitomi wanted to become a ninja there. She never was a mist ninja, but she had very advanced abilities. She had three chakra natures: fire, lightning, and water. She knew a wide variety of jutsus that her father had taught her. She also had extremely advanced medical skills that she learned from her mother.