How much alomity and maintenance need to be paid?

Hello Sir/Mam I seek legal advice in case of my cousin brother's marriage (country - India, religion - Hindu). My cousin brother (age 35) got married in Jan 2019. Both husband and wife (age 34) are graduate but not earning (jobless). His married life was good until 2-3 months from the date of marriage. He got some health issues and probably due to miss treatment ( as well as due to the psychological stress), it resulted in impotency. His wife and her family believe that his impotency cannot be fixed by treatment (just within 3 months of the treatment). And she wants to divorce. his wife and her family want following in form of maintenance. 1) They want to fix monthly amount till she gets re-married Note: Both husband and wife are graduate but are not earning (jobless). The husband doesn't possess any property on his name. 2) They want a share in bank balance posses by husband's mother 3) They are also asking to reimburse the marriage expenses incurred (Like: marriage ha