She wasn't trivialising anything.
she said that CB was aggressive and brought it back to race when she was called on it, in my opinion she didnt say she did it because of her race, she did it because of her personality. How is it racist of it's true? Like I said before, are we supposed to be afraid to call out rude, obnoxious, aggressive behaviour because someone has a different skin colour to us, in fear of being called racist. You can dislike someone for their personality and not what they look like.
Edited because I can't concentrate on two things at once lol