That doesn't always work (at least, when I tried to do the same to Bastila, it was a HUGE mess).
Easier way, check out the code for this thread.
Wherever you see "male" (including the filename), replace it with "female" (same case-upper or lower- as the original).
Also, replace "Bastila" with "Juhani" (or however you spell her name).
That works a lot faster, easier, and better than editing a whole bunch of dialog entries.