As for flying, long distance, don't worry, I have flown my dogs to USA, Western Australia, and they have been in the special part of the aircraft hold that is airconditioned. I use shredded newspaper as lining for the crate, as they will burn everything for quarantine. They will perhaps piddle so make the newspaper big enough to absorb the piddle. For water, add some ice cubes made with Gatorade, or similar, for the trip. Make sure they empty before the journey, and, as soon as you can, give them a chance to potty on arrival. A kong or something similar, might give her a snack on the way, but do not feed her before the travel, save that for when she arrives. Do not feed her at one of the stops, as they often bolt when the airline staff feel it necessary to feed her.
Relax and enjoy the ride, and she will enjoy the reunion with you when she arrives at the destination.