Final answer:
The provided texts do not specifically address Aven and her feelings about playing soccer, so it's not possible to answer why she felt like she was cheating.
Step-by-step explanation:
The context of Aven feeling like she was cheating while playing soccer is not made explicit in the provided texts. These excerpts discuss various characters and situations, focusing on themes such as social dynamics, self-perception, and interpersonal relationships. None of the excerpts directly address a character named Aven playing soccer or feeling like she was cheating. Therefore, it's impossible to provide a detailed, factually accurate response as to why Aven felt this way during a soccer game without additional information or context that ties her experience to these themes directly.