I think the second twin was a complete and utter arse to get pregnant, when she's obviously seen how difficult it's been for her sister. I seriously think it was on purpose, and it was just a case of attention seeking. The first one's been incredibly lucky, but she's got her heart in the right place, and the boyfriend's good for sticking by her and actively looking for a job, even though he's only 15.
The parents seemed quite nice too. I know my mother would've just strangled me, let alone phoning the council to get the child benefit fund sorted!