What the hell, what should I do?

My mother is freaking out because I got her the wrong coffee. I thought she wanted what I call a ghetto latte, it's a starbucks double shot and it's yummy (i work at Starbucks), you get more shots, it's cheaper than a latte. I thought she wanted one, but it was just a misunderstanding, and she is saying that I should just move to Seattle with my father who is drunk asshole who abuses women. Just because I messed up her coffee order cause she wanted a cinnamon dolce, and told me to get myself a ghetto latte, but i thought she said to get us both one. FML! What should I do? I am so pissed off!!