My mum has so much hate for my dad and I can’t stand it

She kicked him out after finding he had texted another woman and often phones me, crying, while my dad lives on his own and seems depressedSome months ago, my mum discovered that my dad was texting another woman, and since he had cheated on her seven years ago, she assumed that he had cheated on her again. He admitted the texts, but denied any physical relationship. She then told him to leave their home and insulted him in all possible ways, threatening him and claiming that her life was over. S