Why did you abuse her by calling her a "racist" ?
Did she say anything related to race ?
She said you spat on the ice tray, but she didnt mention
anything else that is remotely relevant to race, but yet you goaded
her and provoked her and you went personal with her by saying she
is racist and she didnt like you.
You were just inviting trouble. You wanted to have an
argument.
If you didnt spit on the ice tray, just explain it calmly and
said she mistook you for someone else.
If you go down angry and personal like that, you are just
dragging the both of you down and both of you would not be able to
maintain composure or politeness, and that is precisely what
happened.
So whose fault is that ?
I say 50% is your fault also.