Final answer:
The references provided do not mention a character named Aven or a school in Kansas, hence it is not possible to determine who Aven always ate with at school in Kansas from the given information.
Step-by-step explanation:
The question posed - Who did Aven always eat with at school in Kansas? - does not seem to correspond directly with any of the excerpts provided. Each passage details different characters and settings, which are unrelated to a character named Aven or a school environment in Kansas. In the given references, there are characters who interact with others during meal times or have particular eating arrangements. For instance, in one scenario, a school teacher is boarded and lodged at the homes of farmers, sharing meals with their families. In another excerpt, a family on a plantation eats sporadically and without structure. Yet another passage describes a woman who serves a bountiful supper to her guests. Unfortunately, based on the reference information provided, it is not possible to determine who Aven always ate with at school in Kansas.