Complex sentence: Vonn continued rehabilitating from last year's season-ending injury and a dog bite from a pet, while Shiffrin was out recuperating from an injury suffered during practice at Åre.
Split into simpler sentences: Vonn continued rehabilitating from last year's season-ending injury, and from a recent dog bite from one of her pets. Shiffrin dropped-out to recuperate from an injury suffered during practice at Åre.