I don't have any real thoughts on the recall if she won't do it but I do know that my Yorkies (who are also not great at the recall comand) are wonderful travelers. They are great in camers and great in long long road trips. I really don't think you'll have a problem just keep her on a leash when out.
I love traveling with mine. We have traveled from Alaska to Florida by car twice. No problems and even better for you since you won't have to worry about hotels. Leash on before getting out of the car and all was good.

I can say they really enjoyed it as well.