[18/m] girlfriend [17] moving out advice.

So me and my girlfriend are planning on moving out and leaving the state to get away from all the negatives in our life. But my girl is a little weary with leaving her dad. we both decided its what we need to do and we know we'll be better off. But shes having a hard time with it. I dont really know how to help her with this since i moved out last year and already dealt with my parental issues. So ive given her all the advice i can and shes still having a hard time. Reddit, how can i make it easier for her to get through it?