Is this racist/colorist

-Has told me on many occasions that I'm white, and that everyone thinks I'm white. (My dad is black, she's white, and I pass as black)

-Has used the "N word"

-All her baby daddies are black

-Openly told me that after my second brother was born (he is white passing), she hoped her next baby would be darker, and was suprised that he was born even paler than the second.

My mom being racist came up in a conversation, and I said "yeah, shes said some racist things, and she might be a little racist". And my grandma got all up in my face for saying that and I was like "YOUR MOTHER IS NOT A RACIST, HOW DARE YOU SAY THAT. YOUR SCHOOL HAS BRAINWASHED YOU INTO WHAT RASCISM IS AND ISNT." (She didn't even ask why I thought that, she just blew up and ranted in front of all my family). I don't know. Maybe I'm wrong. Someone please educate me if I am.