AITA For Firing an employee after her dad died?

So here’s some backstory, we are very short staffed right now. After COVID struck do to a lot of different reasons we lost a lot of employees and we hardly have enough employees to stay open. It has been very stressful and I’ve even had to take away days that some people asked off more months in advance which I usually don’t do. I had a 2 week long vacation planned and there needs to be a manager on staff at all times whether that’s me or my Assistant Manager (AM) she told me that she was fine with taking the hours on because she had a lot of medical bills to pay.

Unfortunately her Father passed and I was very sad to hear about it. I even let her have a day off when she was supposed to be working. The thing about it is this happened right before my vacation. Just a couple days before my vacation. She said that she needed time to recoup as well as plan the funeral. Like I said I already gave her a day off. But she wasn’t fine with this she insisted she needed more but I told her she needs to come in and she knows the consequences for not showing. She had already used her 3 sick days so I knew she couldn’t just call in sick. So I do my last day before my vacation and hear nothing from her so I assume everything is okay. But my vacation day comes and before I’m even ready (we open early) I get a call saying that AM didn’t show up.

I had to cancel my vacation.

Needless to say I fired her and now I have to work until we find a replacement. Now normally my employees are good but they told me that I shouldn’t have done that. They said a lot of things mainly about money and needing time to mourn. I understand that and I told them about the day off. Ever since then they haven’t been taking me seriously and I can’t stand it. It’s been a week since then and it seems like they’re still not over it.

So Reddit, AITA?