So this confirms what everyone has been speculating. She was involved in those sorts of relationships. #1 She didn't care if anybody knew, she was posting with her own name. That is a little risky and some might say reckless. That might be good news however in that she likely didn't have a burner phone and there are likely records of her contacts/relationships. #2 What might cause you to meet someone in a park at 3:00am that you would want to do more than sleep, more than see your cat, more than get some rest for your exam... #3 I am going to go out on a limb and say that this was not pre-planned before she left from LA. That means sometime between 1:35 when she landed, and 2:42 when the lyft picked her up, someone texted or messaged her where to meet, left their residence, and got to the park. If they didn't want to be at the airport to pick her up then they didn't want to sit in a parking lot for 30 minutes either so they were close enough to time it just about right.