Domestic violence on colleague by his Elder brother

I am asking this question on behalf of my office colleague.She is working for reputed private sector bank but from start of pandemic she is working from home.In 2020 her father tried to molest her, Beat her & respective complaints were filed in Panvel police station & only warning was given to her father. In her family the father & elder brother (age approx 35 unmarried) always beat her mother, But from pandemic her elder brother started to fight with her, last year 2020 they shifted from navi mumbai to VAISHALI, Ghaziabad. Her brother always pressurize her sister to leave the house because he thinks he has 100% ownership rights because HE is SON & father mother both supports only to SON because of Older generation mentality. Her elder brother was emotionally & mentally abusing her but Today at around 3.30 am He has given a SLAP on her sister face & Bend his right hand because of which She is not able to work Today. Kindly Provide me the Legal Solutions urgently. REGARDS, THANKING You