WIBTA if I retaliated against my cousin with a racist joke.

So I (21F) (half Filipino, half white) am at a family reunion currently staying with my cousin Jessica (half Mexican,half white) (44F). She picks on me and teases me. She always makes jokes about me being Asian. She once made a joke about Asians being bad drivers. She scrutinizes everything I do. She gives me shit for liking Twisted Tea and White Claw. Always makes jokes about me being skinny. I think she’s jealous of me because she’s old and I’m young and pretty. I took a shot of vodka from a 40z bottle and she told me buy another for her when it’s been full and other people have been making drinks too. She called me “Asian” the today when trying to get my attention. WIBTA if I called her a beaner or wetback as retaliation? Or made a mean joke about Mexicans?