Daughter-parent relationship troubles?

Don't get me wrong on any of this I love them both a lot, but lately my mom is never home and my dad is either working or sleeping (he is a truck driver) My mom is always working at her friends house down the street (he is a older man) and when they are home all they do is fight. I cant take anymore of their comments about each other. (BTW: my parent s arent married and basically just live together but they have good days and bad). I am used to my dad not being around, but i hate not having my mom here she is at his house almost every day and when shes not she talks about what she did there all the time, and its not that i dont want to hear it its that it used to be me and her doing things now its her and him so yes im jealous but she says he's helping her make money (they work on crafts) something she begged me to help her with so she puts the blame on me. Which i deserve partly but i feel like if she was her i could but i don't feel like cleaning and helping her when im all by myself. I just don't know what to say to her i have tried talking to her about it and when i do i usually get yelled at. What should i do or say to improve and express my point of view. sorry if this is long and confusing. THANK YOU!