I'm presuming she was fine in the car previous to this, also that she was fine in the flight OUT to Arizona, so its just since coming back.
Personally I dont think this is a fear or phobia at all, I think its possibly a control issue, just because it doesnt gain her anything obvious its still a control trigger like the food issue with alot of kids, they will turn down food they have always liked to gain control in that environment.
If it were me I'm afraid I would put her in the car, strap her in and drive.
The more you indulge it it will prolong it.
Personally I dont think this is a fear or phobia at all, I think its possibly a control issue, just because it doesnt gain her anything obvious its still a control trigger like the food issue with alot of kids, they will turn down food they have always liked to gain control in that environment.
If it were me I'm afraid I would put her in the car, strap her in and drive.
The more you indulge it it will prolong it.