My memory of the story of Kitty's pregnancy that on one level she had no one, only her criminal day and 2 much older brothers. Her mother having "disappeard" and that she was made to feel it was her fault that she was "complicit". Not at all unusual for men to blame the woman, or even a 12 year old girl. This was / is part of her anger.
It only through meeting the women in the band that anyone has told her she is not at fault.
But interesting that now her dad, is willing to identify the men. I am sure he hasn't been converted to thinking an underage girl is never complicit, but does have other reasons for helping her now.