Thanks a lot of interesting stuff there.
I'm beginning to think she's kinda sympathetic. My theory is that her brother took Hayleigh, she knows it, he's threatened her and members of her family if she tells, she's scared. She may know her brother would be locked up and she'd be fairly safe but if she thinks her psycho cousin was involved but has no proof he'd still be out and able to harm her or everyone. She does say at one point that if Tommy was involved then Joe was involved too.
Her tears come across as genuine to me. She seems to be very upset about the whole situation. It seems like in the interview she keeps telling them that her brother did it without coming right out and saying he did it. She keeps mentioning stuff about the red van and how he sold it and how people reported seeing a red van, the scratches and weeds in the grille etc... She seems to be attempting to steer the police in his direction very hard. It appears to me, at least, that the things she's deceptive on fit my theory. However, at the very end she's asked if she's been threatened and it cuts off before they say anything about possible deception. It could be no verbal threats were made to her and she's just scared because she knows him very well.
IMO, she's hoping the police will find enough evidence on him themselves and she won't need to testify. I also think she's afraid that if Ron finds out that he'd kill her brother and then Ron would be in prison. I think at this point too that not only would Ron kill her brother but he'd go ballistic on her too.
I think she's put herself between a rock and a hard place and she's not dealing with it well. She is 17 and I don't know how I would have handled the whole thing when I was 17.
The latest stuff from the police is to pressure her to let them know everything. They probably are 99% sure but have nothing to prove it.
I'm usually one of the worst at telling when people are lying but for some reason but I'm pretty sure I'm right about what's going on here.