Harassment of my sister by her husband & his family

Hello sir I'm getting directly into the point. My Elder sister was married to a software engineer who's native is ongole & was working in Hyderabad with both the families consent on April 21st 2016 We told his parents that we can only do the marriage & no dowry. All of them accepted for that, but they started asking all the rituals & customs of our community in a very grand manner as soon as we fixed the dates & get the wedding cards printed.My parents did whatever they asked for as she's our only loving daughter His mother started telling him over phone that she's not lucky to their family as his father was retired,some of his cousin met with an accident,etc like this He use to quarrel with her often on these things He & his family demanded my parents to give all the furniture and home appliances for the house he has taken. We took time for that raising a loan to meet all the needs & in the meantime he&his family use to shout at my sister for not bringing them immediately. He use to share his bedroom & sexual matters with his sister's husband daily. He suggests him to torture & beat my sister during sex. He did the same & when my sister is upset or sick,he use to tell her that his brother-in-law asked to do like that He also use to share the menstruation dates of my sister with his mother & his sister They forced my sister to use cloth napkins instead of sanitary pads as they were costly & additional burden on their son upon which my sister told them politely that she'll look after them from her money My sister got pregnant on July 26th but she has a fibroid problem Doctors suggested that it is not safe for my sister to be pregnant with that fibroid as its position inside is not safe & if you insist to continue pregnancy, a lot of care has to be taken everyday right from the very first day & strictly no travelling He took her to his village on August 5th & returned to Hyderabad on August 8th During this journey she didn't feel well,she wasn't given proper food in their place On 8th August 2016 she told him that she's having terrible stomach pain but he ignored her because his mother said my sister is acting On that day evening my sister got abortion & he tried to hide that from us but the neighbors called us & told us what has happened to my sister My mother went there took care & brought my sister to my town as he's not taking care of her on August 10th 2016 Till today he didn't come & take my sister He & his family are spreading rumours that she acted & it is not even pregnancy He tried to burn the hospital abortion discharge certificate but my sister brought them with her In December 2016 she was operated to remove the fibroids which are 2 in number & 3.75kgs in weight which risked her life My father requested him to come to hospital & sign on the NOC but he refused to come His brother-in-law posting bad posts on my sister Facebook