False dowry allegations

Hi My brother got married in 3 march 2019 , we belong to sikh religion , as my sister in law does not corporate with my brother and my family , she is rigid kind of lady and very dominating . Now after 3 months she has registered FIR agaisnt out family with section 498a , 406 , 342, 506 . marraige was very simple and vegetrain , but now she is claiming that she has spend 25 lakhs in marraige which is inappropriate . The problem was that she mentally torture my brother and due to this he drinks sometime but before marraige we said that he does not drink . and that was true but due to family problem prevailing at home he started drinking. thats is only our fault . Rest blame is putting on us are fake .Me and my brother is staying at pune from1.5 years , In may my sister in law also come and after one month she go back . but after reaching home she collects our gold from my mom and dad by tricking way she left the house in peaceful manner , and after some days she registered FIR and said i ran from pune we have OLA cab bill and airflight ticket , but after reaching airport she dont go by our ticket , she purchased at the airport , might be her plan was , and then go back to punjab , my dad received her from amritsar airport but she is saying i ran from pune and went to her home . and she is making false story , we have not hurt her . please help in this