Darek

Well, if Kae is Handmother's mother then Kreia, if the same person, would have said something about it. Or Handmaiden would have felt through the force that Kreia was her mother.

Kreia and Kae are NOT the same person. Kae is a male Jedi master who turned to the dark side and is now dead. You were supposed to meet his padawan on the planet where the robot factory was located. The sound clips with her conversation can be found in the SWKotOR2\StreamVoice\802\Vash01 directory.