my mom is really messed up in the head?

my mom is sick I cant stand her she says the most disgusting crap in front of me and my sisters she will talk about her sex life how she goes to sex clubs and has sex with other men. when I tell her your sick your really proud of being a horror she says yeah I am. sometimes I don't clean when I'm told but when I do and I don't yell at her she still tells her friend that I didn't and tell my dad I didn't she has so many problems all of her sisters and nieces and nephews basically everyone hates her she only has one family who is her friends but there only friends because of the lies she feeds them when I tell her this again she says I don't care