Final answer:
There is no direct information provided about Aven's mom's college major. More context is needed to answer this question accurately.
Step-by-step explanation:
The student is asking about Aven's mom's major in college. Based on the information provided, there is no direct reference to Aven's mom or her college major. However, we can infer from the mention of individuals pursuing higher education and their chosen fields of study that the student might be referring to a character from a wider context not given in the details above. If the question pertains to Tara Westover, the author of 'Educated', then her major was not in the social sciences but in history and she earned a PhD. If the student is referring to a different Aven, more context would be needed to accurately determine the major of Aven's mother.