My guess- there was some kind of mental illness or drugs involved. Usually, in cases like this, the family is outraged- which doesn’t seem to be the case here.
It looks like we were both right. She was on her way to alcohol rehab. Although why her family let her take the trip by herself is a mystery to me. The family obviously knew she was out of control, but an escort would have been prudent (well, hindsight says so)