frogs and toads secret a nasty toxic substance that irritates mucus membranes and delicate tissues of the digestive system. she should be fine, but if she starts running a fever, or cannot keep food down tomorrow, i'd put a call in to your vet.
Tangentially related.... I heard a story on NPR once about a Cocker Spaniel that got addicted to sucking on toads for the presumably psychaedelic effects. They said the dog would go through withdrawal in the winter when the toads were underground. It was a strange but amusing story.