A vacation to the Alps for "altitude training", being served hot chocolate and having her feet rubbed by sherpas will do nothing but make her weak.
She needs to stick to the swamp. Training in hot humid weather is what makes her tough as nails. She needs to be in the bog.
She needs to set up that elliptical in the middle of the stifling marshland and ride that thing among the gators and will-o'-wisp. That will give her the best chance at the Olympics.