Like in the dwindling days before her husband was finishing his degree and going back to (Thailand) to serve in the government, I didn't really notice it at first, but my one (Thai) (newlywed) coworker was a bit more combative than usual, to the point where I even texted someone I know with (Thai) background, to see if there were more productive ways to deal with that coworker since it seemed like there was face-saving issues going on, and that person then asked me if they were (Chinese Thai), and when I said no, they were like, ummmm, that's not a Thai thing, that's a them thing, and don't let them pin that on being Thai.
And, I just stayed out by the front counter a lot, rather than deal with her.
Then, the next time that I worked with her after the incredibly busy day that I worked with her husband and we got slammed and I made like two mistakes, one minor (forgot to bring out salads to a difficult table that kept me running about other stuff), and one more major (forgot to hold one ingredient on an order because I was interrupted by a phonecall and people coming in through the door), she was a total know-it-all and was saying that we had to have one person do one table and then one person do another, but when I told her that that didn't work since one person would get trapped in the back by work popping up there and one person would get trapped up front by the other work popping up there, she was like, "[My husband] said it wasn't busy," and then she threw it in my face that I made a mistake, and she was nasty when I asked her about something with a gift certificate, too.
And, I realized from other things that she said that she was upset about moving back to (Thailand) because she wanted to stay in the States, but, like she would occasionally do on mornings, she was now taking out those frustrations on me, only she was kicking it up a couple levels to the point where it was very unpleasant, like to the point where if you did something, it was wrong, and if you stayed out of her way and didn't do something, that was wrong too.
And, later, she told me to refill salad dressing because we were running out, which I couldn't do because of a problem with my shoulder, and she told me to get someone from the kitchen to bring it out, but that would be interrupting them when the kitchen was slammed, so I didn't do it and told her that it was a bad time for that, and later when it died down, I could hear that she was in the back talking with one of the cooks, and I was out front since someone always has to be out front, and I was basically realizing that not only was she just lollygagging around, but she was probably also watching me to see if I refilled the salad dressing, like she was my boss or something and I had to do what she said.
So, I didn't do it, and then when we surprisingly got another rush and the salad dressing ran out, without telling anyone, I snuck out the special ginger dressing and used that for the house salads, and then the one owner, the wife with the (tired) face had to come out to help, and since the salad dressing wasn't done and it was needed, she needed to go and do that, since both of us were so busy waiting tables.
And, as the rush was happening, my one (Thai) (newlywed) coworker asked me why I didn't refill the dressing, "Look, the owner did it!".
And, I told her that when it was first needed, I couldn't lift it and it was a bad time to ask the cooks to do it, and after that I couldn't go back in the kitchen to do it when it was slow since I had to be outside.
And, she said something, and I told her that I heard her talking with the kitchen workers, and if she was free and could talk with them, she had the time to do it.
"No, if you are working , I am working," she was like, making up shit on the fly to put me down and twist the situation and dump everything on me.
So, I said something heated, I can't remember what, and later she said she didn't want issues with me, that we can go talk to the owner, but I played dumb and said that I didn't understand what was wrong.
"Is my English bad?", she was like, "I don't understand why you don't understand."
And, she said we should talk to the owners, but I said I didn't understand what was happening, and when she tried to explain, she made something up, and so I was like, "That's a lie, and I don't want to talk to the owners when there are lies about what is happening."
And, I added that she was leaving soon anyways, and it made no sense to start something now.
When it was time to leave, too, we usually have to decide something between us two to order for our free staff meal, but I said I didn't want anything, and I just stayed out of her way and kept interactions to a minimum and then left.