If the area where MH's body was found was known for partying, wouldn't the person who left her body there be afraid that others might find her body at some future party? And, given GPS navigation, can we really be certain that this person had a very strong link to the area? Seems likely he may have been in that area before, but he would not necessarily need to have lived there.
One thing that strikes me as perhaps unusual is that no effort was made to cover up her identity; almost as though this person wanted the public to know
specifically that MH had been abducted and killed. A bracelet and dark clothing were left on the corpse
[
http://www.nbc29.com/Global/story.asp?S=11881412 ]; MH's handbag/pack with her ID were found on UVA property; yet these items could have been completely destroyed very easily & destroying them would would have thwarted the investigation further. Therefore, a random predator seems less likely.
Perhaps she met up with an angry & abusive ex-BF at the concert; perhaps this meeting occurred without prior planning. Maybe he hits her causing the facial injury or maybe he is just nasty to her in some way, someone in the arena confronts him & tells him to leave MH alone, threatening and insulting him. Or maybe someone instigates some type of altercation involving him even without any provocation on his part. MH may have been accidently injured in this altercation. The incident causes him to flee the arena feeling totally humiliated, and then MH follows him out. Not seeing him outside at first, she tries to get back in from the cold. Then, she decides to go looking for his vehicle in the RV lot. Then, she proceeds across the Copeley Street bridge, perhaps to check the Emmet/Ivy parking garage; but seeing him driving across the bridge, she jokingly sticks her thumb out as if to hitch. Still enraged at having been humiliated inside the arena, he pulls into a UVA parking lot (either the Cage or the RV) and grabs her bag, and throws it out the vehicle window. He also takes the cell phone battery to stop pings (he has criminal ties), and throws the cell out, too. Since he couldn't both restrain her & drive, he may have punched her out cold; killing her perhaps unintentionally?