What would you do?

For whatever reason, spilling my drink has always been a hardcore anger trigger for me. I’m working from 7pm to 6am tonight. I stopped at a gas station to get some coffee. I customised it. Only thing I couldn’t do was make it stronger. Luckily, I found some instant coffee at work. I went to add a spoonful and noticed that it was so moldy that it looked like spiders got all inside of it. Not just one or two spiders. No. This is where my issues begin. A clump had broken off and fallen into my drink. I had one sip out of it. I got so mad. I texted my wife (that I'm currently separated from) and offered 20 dollars for her to walk (because she doesn't have a car) the half-mile up here to drop me off a shitty canned coffee. I told her “never mind” very shortly after. Half an hour later she tells me that they are by the door. I told her id get her the 20 in the morning and she said “its ok, i empathize” i wasn't trying to spend 20 dollars on a crappy can of coffee. I feel obligated.