Want help for my mother as she is facing mental harrassment by her daughter in law

2015 me meri bhabhi or Bhai ki shadi hui.shadi ke 3 mahine bad se hi meri bhabhi ka behave meri mummy ki trf aggresive rha isliy meri mother ne apna kitchen alag krliya meri mother ek 65 yr old widow women h apni pension pr hi survive krti h.itne saal jese tese cut gye lekin last two yr se meri bhabhi ne ham sabko bhot zyada preshan kr rakha h.2 saal pehle mere Bhai ki ka apni Salaj yani bhabhi ki bhabhi ke sath affair chal rha tha or vo usebhaga ke le aaya or tab se hi meri bhabhi ne uska badla hmare pure parivar se Lena shuru kar diya.mere Bhai ko jhuthe maarpit ke case me jail bhi krwa chuki h.or roj Ghar me jhagde ,gaali galoj or ab khud bhi uska ek police Wale ke sath affair chal rha h jisse milke vo hame aaye din police Thane me bezzat karwati rehti h. In sab se meri mummy bhot zyada preshan ho chuki h in fact vo suicide ka Tak karne ka sochti rehti h.usne ham sab par jhuthe jhuthe marpit ke dowry ke case bhi kr Diya or Roz Roz hame torture bhi krti rehti h kuki sare laws daughter in law ke favour me hote h isliye vo hame preshan krti rehti h uski family bhi hame dhamki deti rehti h..ham log had se zyada preshan ho chuke h Puri society me hamari bhot bezzatti ho chuki h yha Tak ki meri bhabhi ne hmari sari rishtedari me bhi hmari bezzatti kra di jise sbne hamse rishte Tod diye in sab se is Umar me meri mummy tut chuki h or suicide krne ki sochti rehti h..plz help me