I’m not sure why she would think you are going to pay her way if she moves out. The point of moving out is taking responsibility for yourself. The only reason you would pay anything is if you promised to help with college expenses. As for the car, it’s your car. There again I’m not sure why she would think taking your car was an option. We did help our kids get their first car, they were all used vehicles, nothing fancy. Mostly bought private party. All of them had to pay us back for the car. Encourage independence in your adult child. This is an about punishing them because they won’t live their life the way you want, it’s about giving them the tools they need to succeed in life.