Hi. She appears to have what is called MOTION SICKNESS. Patients with this condition develop nausea, vomiting, giddiness, discomfort in stomach during travel by car, bus, ship etc especially if lot of turns are there. Solution : Eat bland, soft diet, small amounts before travel Open windows is helpful to some Keep looking forward rather than sides. You can give Tab Stugeron (25mg) 1/2 tab , one hour BEFORE  travel. This prevents motion sickness in most patients.