Raped by her own step-father?
Yes it happens more then you ever hear about. Many times girls are too scared to come forward because of threats & mothers who don't believe them. Or mothers who look the other way. Where have you been, stories like this are in the paper all the time!
I would just make sure all the DNA matched, convict them, make sure they got all involved & kill them asap. I have no mercy for scum like this. Nor do I like paying for scum to sit in jail & cost us money for appeals . If they are 100% guilty then rid the earth of scum like this IMHO.
This is much more common than people want to acknowledge.
Cases like these are why my wife and I have agreed that neither would re-marry should something happen to either of us.
Been happening since the dawn of time. :(