Finally caught up. Thank you everyone for all the links and information.
This case certainly gets odd after Morgan is refused re-entry into the arena. Everything up to that point doesn't seem odd to me. If she went outside to smoke, or to get some fresh air because she was sick from whatever (heat/over excitement/too much alcoholic/bad drug experience), that I understand and I've seen this a million times before at concert events. The smoking area could have been further away then the front door, and too crowded. I'm sure Morgan wasn't aware she couldn't get back in and sometimes security will tell you as you are leaving, other times they don't give a damn because they are too busy to remind everyone.
Now once she goes outside to get air, or smoke, then she's refused re-entry, why don't her friends come to the exit and give her the keys and allow her to go get in the car OR go ride somewhere and sit to eat and wait, then come back to pick them up?
I don't get how they just let her walk around outside an arena by herself without someone going to the exit and trying to get her back in, or at least giving her the car keys to keep her safe?
Did Morgan really call or text to say she'd be fine and she'd get another ride? Was she forced to do by her abductor? idk
The friends, no matter what her mom and dad say, acted irresponsible and very weird to their friend being locked out of the arena alone in a city a couple of hours from home.