I've worked on several photoshoots (for small niche magazines, not their first issue, because the agencies want to see the magaine in production and also need to see the quality of the photogtrapher's work, before they release models for shoots like this), where the models were unpaid, and they had to travel up to 2 hours each way to the location (often, way out in the desert, at the beach or in the mountains) and they were able to get them from L.A. agencies ... without paying expenses.
But, usually the crew and models meet in a central place and caravaned to the location which was way out there. So some of the transportation was provided for the models ... they just had to drive to the central meeting place. Photographers, Stylists, and Makeup artists usually have at least a good sized SUV or a van because they all carry their own equipment. They will usually transport a model or two, if needed.
And lunch and snacks must be provided and lots of water ... that's a given on any shoot ... for the entire crew. It's all brought out to the location, usually by whoever is in charge of the shoot. Even if it's in a studio ... food and water must be provided ... or you will loose your crew and get less done, because they'll stop and go for lunch somewhere ... and will still expect the magazine to pay.
I've found that the models will drive a long way, if their agency wants them to get the pictures and the credits. So it comes down to quality of the photographer's work, the quality and circulation of the magazine.
Magazine shoots are not known for paying much, if anything ... so agencies are used to this. Editorial shoots are an investment in her marketing matierials.
So the criteria is not pay ... its the following: will this shoot help their portfolio, will the shots be astounding and something that will work for her market, will the tear sheet (or cover) be worth her time, is the publication a quality one, how well known is the magazine? All you have to do is to proove to the agent that this is going to be great so they want to have their girls on that cover and you will be able to select from some decent fashion girls and they will find a way to get where you need them.
Plus ... just because an agency is in L.A. ... it doesn't mean their girls all live in L.A. You will find girls from Redlands, San Diego, Santa Barbara. If they are newer models and not well known, then already have been told that they will have to drive to where the shoots are and where the clients need them to be and that is one of the costs of doing business. (Models actually are self employed, their agencies work for them.) Anything within a couple hours drive from the agency can be considered "local", in my experience... and an overnight stay would not be warranted for models, who don't have to set up and prep in advance. You should be able to get a cover shoot and up to about 4 pages of editorial shots done within 8 hours ... maybe faster if it's planned out carefully in advance.