Sweetie, you can't get a girl to do anything. You can work with her and love her and make a case to move, but you're not going to make her do anything she doesn't want until she's sure it's the right thing to do.
I was living in Atlanta when I met and married my husband. We were both very happy there, and we both made great lives together and apart. He got an opportunity to move to a small town in Florida to work for a small studio with lots of potential.
It was a huge leap for both of us, but I was convinced this is what we needed to do. Being self-employed I could move anywhere and do what I do, but my client base became much smaller.
So we've been here for a few years now, and I've come to call it home. But trust me, it wasn't perfect from day one. You need to be aware of that. Sure, she might come to be with you, but there's going to be a lot of frayed ends where she yanked herself away from her home. You better love her more than ever before and take care of her.
I hope you find a resolution that works for both of you.