I believe that I can shed some light on this.
This appears to be the same problem as is described here:
Essentially, when you complete the "lost daughter" quest, instead of returning to her father, she appears to be added to the Wanderers category as a 0 skill wanderer. This is the case at least when you fail the persuasion minigame and end up killing her lover. It's possible to end up with multiple such characters in your wanderer pool.
If necessary, I probably have a 1.4.1 save game knocking around with such characters in it.