Pensioner died can the second wife claim for pension now

Hi sir , this query is in th regard of my mother , she got married  who was serving in police . After marriage she came to know that the person was already married and having three kids from first wife ..but due to mutual acceptance both continued their relationship . He spent his life with his second wife . thouh he had fullfilled his all duties to other one as well ..after retirement her husband announced him as a partner and declared the same in all the required gov documents ..and after his death my mother starts getting due pension and it all mentioned in every record .but first wife challenged that in court and won from district and session court ..court ordered to stop the pension . which has been challenged in high court and pending till now . and now its been more then an year now mr jasbir singh's first wife has died too and her kids are well grown up .. pls adviced what can be done in this case...