I'm going to call my mom a racist old bitch
I am very shocked right now. What did she say for you to call her racist?
She yelled at me when I messed up a dish which she made for a friend of hers
I feel like she really wanted to have the dish made perfectly and you should tell her you got hurt emotionally when she yelled at you, instead of retaliating by calling her slurs.
She is a bitch and she is a racist.
I do no think that it's nice of you to say that as it is the mother that have raised you. If she did something in the past that makes you think she's a racist then it's a responsible thing for you to educate her about it instead of just calling her one.