DV Case under Section 12

Respected Counsels, Brief facts of my query is as follows: 1. My brother got married by running away from home and performed his marriage in local temple and later registered it in front of friends without our knowledge. (Their age was 21 and 20 respectively) 2. The girls father filed complaint against my brother in police station that her daughter is already married and recorded his statement in writing. 3. My parents not allowed my brother and his wife to enter their home and they started living separately without being in our contact. 4. As they had no place to stay hence we arranged a rented flat for them through one of our wellwisher as we dont wanted to involve directly. 5. The girl during her stay in that rented flat started going his parents house often as my brother mostly was out due to work and he use to go late in night. 6. The girl parents asked us to accept the girl in our family to which we put our stand that we are ready to forget everything but she should come in our home with clean hands by officially dissolving her first marriage which they denied/not taken it seriously. 7. The girl with a promise to convince his parents gone to her parents home as my brother required time stand on his feet and save money to buy a flat as all the money earned was being spent in rent allowed the girl to go at his parents home and he started staying at his workplace (construction plant) 8. The girl started behaving weirdly after going to his parents home and stopped contacting or replying my brother since 1 year due to which my brother visited her home where he got to know that they had shifted so to get new address he called her father who instead warned my brother to not to call him. 9. Now i recieved a DV case application notice under section 12 filed by my brothers wife with fully falae and fabricated allegations against my whole family she even dragged my wife who never even saw her (she came in our house after my brothers love marriage) and the wellwisher who helped them to get a rented flat. Considering the events unfolded i request you to guide me to how to protect my family, i have 1 year old son if anything happens then what we gonna do.