Fraud in marriage

On 15th March 2022 my brother got married to a girl from Jaithra UP. My brother is a btech graduate and is now handling family business of brick kiln in Farrukhabad UP. It is an arrange marriage and we were told that girl has completed BA from English. At first we denied for this relation as we were atleast looking for a bride who has completed atleast Bsc but her father convinced us that girl is very good in studies and because of their financial issue he can not provide her better education but if we would like she will proceed studying after marriage too. We were not looking for a girl for job so we got ready we were told girl has complete English from BA and has geography, history &civics and economics till 12th. We got ready for marriage with a thought of continue her education after marriage but now we came to know that she knows absolutely nothing not ever the questions of 1st class for eg who was apt. Jawahar lal Nehru or Rani Lakshmi Bai or even what is the capital of India or what is Russia etc etc. We were family of 5. My father got expired in 2017 now we are 4 people. My mom, younger brother (for whom I am seeking this advice ) and we two sisters who both are married, post graduate and both working in MNC’s. We all are well educated and have always prioritise education the only reason we got ready for this marriage because my mom & brother lives in Kaimganj and we were not looking for a girl with job but at time too education was our priority. We were lied about her education now brother has totally denied living with her and on this when we questioned her father yesterday he admitted that his daughter knows nothing and might have given the exams by cheating. We asked them to take girl along with them complete her education and then she can come back and live with us but right now our brother is feeling cheated and do not want to live with her but they denied saying we will not take her long with us. We are clueless and want an advice if we can seek for divorce or put a case against family or fraud. Our family is devastated and have no idea how to move ahead as brother is clearly saying he will not ruin his life with someone who has zero knowledge of her own country itself forget about the education. Please advice us?