Young couple goes on van tour of US, boy comes back with van - no girl

Young men too. Not sure if you followed it but Gabby actually did get physical too - she was actually arrested earlier on the ill-fated trip when they were pulled over. Not she would have killed him or was to blame.

The whole relationship was toxic. Two people with incredibly low self esteem.
I always have to be careful because people like to claim you're "victim shaming" when you dare to speak to the relationship mistakes of the young. She was def. a little OCD by wanting things just so and got frustrated and it manifested by lashing out but by no means was that a violent or controlling act. But mostly, as a young woman, she was confused by what love is and this relationship should have been a life lesson in toxic people that she moved on from.