you can gain a lot of influence on her on Dxun/Onderon.
in dialog with her i always use the following order:
1. why she never kills - followed by the [awerness] line.
2. apolagize (i think you only get this after the above)
3. tell me about Hanharr.
4. raised on Nar Shadaa.
5. Why restless (only onboard the ebon hawk)
this way i can "turn" her without leaving nar shadaa. sadly this only work if your LS - so i usually fall to the dark side after i trained her to become a jedi. (in my opinion the greatest challenge in the game: get handmaiden and mira to become DARK jedi )