Sasha ot Sulem was abducted from her family by Mandalorians when she was a small child, raised by them, abused and hurt. When she managed to escape, stowing away on the Ebon Hawk, only to be chased off by the the amnesiac Revan.

But that was years ago, now a grown woman, still drifting from place to place. Barley able to communicate. Lost and alone in the galaxy. This was based on the Dark Side choice in KOTOR. Everyone is an adult.