Anna Saultron 
Kira lost her whole family & almost her life at what was considered a normal day in the park, with 6 years. She found a loving 2. family but the tragedy struck once more as her 2. Father died. After which her 2. mother acted like Kira was somehow infectectious.
Arkham had a relatively balanced childhood as long as her Father lived, he died as she was 8. Her mom than turned up her Draconian behavior to 11, forcing Arkham to "live out her dream" (that of the mother) forcing her into all kinds of 'Hobbies' like music, dancing, poetry, arts.
On an Union core world Arkham would have been protected, sadly her mother took her to a colonial world close to the Rim. Arkham fled & lived on the street as she turned 13. Taking on the name Arkham.
A.S.H.L.E.I. is only 6 years, her 'childhood' was reinforced learning behavior, patterns, data analysis etc.