She could therefore offer it to a person first. When a person is suffering discomfort for lack of food or drink, he may eat and drink first. When one fulfills the mitzvoh of receiving guests he may give priority to people. The rule only applies to food which is uniquely for animals. Note that the verse from which we derive that animals are served first mentions giving grass of the field to your animals.
Water is for human consumption as well.
The rule does not apply when the food is gotten in a miraculous manner. This article is provided as part of Shema Yisrael Torah Network Permission is granted to redistribute electronically or on paper, provided that this notice is included intact.