If crime occured at shell, I would think the river there would be the first place they think about. If she was placed there, I agree the crime occurred at Magnolia. However, there is also a private dock and river on Smith Lane where Timmy lived. As, of course, there is water near ron's.
I would think she was in a covered vehicle. If she was driven away from scene, she would have been placed in a container such as a cooler. It appeared that Tommy kept rope and coolers in the back of the van. I have no idea if he was involved. As I said misty is very capable...she could have borrowed the vehicle. She is not the helpless little girl she chooses to play on camera. She lies. Her meeting up with rc was the worst scenario possible for those children. I don't think she would cover for rc. She is keeping quiet because she is directly involved.
I see how people can get snowed by her though. There were times she pulled at my heart strings. For now, I am standing by my first impression that she is a liar and a player. I see glimmers of casey in her. Ron is a criminal and has a criminal mind. He is a liar and he is also a sociopath but I think misty is more cunning. The testing that misty took shows some significant markers for soicopathy. I wish they would have rc take the test with results given.