How am I the asshole in this?

I believe I posted a month or so ago about my boss changing the days we have for spring break and that I had prior plans. We'll to be nice I changed them and have been coming in this week because another worker is out and our cook now just won't come in. But I told the director Friday I will be taking the day off to go visit my boyfriend. Which apparently isn't a good enough reason even though I was supposed to have the whole week off but came in to help. So now she's pissed at me and saying now her and the other workers will have to struggle that day without me just because I wanna go visit someone that apparently I can do on another day. But again this week was supposed to be my vacation time that I was given. But due to the daycare needing help I've come in but want just one day this week off

How am I the asshole in this?
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