This is gross.
She's injured while working, toughs out the rest of the shift (good on her - she didn't want to let anyone down by leaving halfway through a shift!), and then got herself seen to. But all you can do is whine about how you don't have enough staff and she should just suck it up and keep going because all she does is tap a screen and her being off injured is just making it so haaaaaaaard... for you.
Are you actually this vile? Do people this disgusting exist outside of the Oval Office? Because I mean like, her finger is broken, but the real tragedy here is that you have to make some phone calls to cover her shift. HOW WILL YOU GET THROUGH THIS OP?
You sound like you need a serious reality check, and a crash course of thinking of someone other than yourself.
You know, my grandfather passed away on Friday. I found out on my way to work. When I told my manager, she sent me home, and worked my shift for me, despite having already worked her own.
I have a very bad ankle, and my assistant manager, instead of complaining that I'm not necessarily able to do every single component of my job (I find it hard to walk at the end of an eight hour, for example), she asks me what I can do, lets me do that, and does the rest herself. (So she lets me run the counter for the last hour, and does the vacuuming herself. Both things need to be done, but she deliberately makes that last hour as easy for me as possible.)
Neither my manager or my assistant manager have to do those things for me, and trust me, I'm grateful for them. They do those things because they're decent human beings who care about their staff. They do those things because they're not vile piles of human garbage who care about nothing but themselves. And they're not on the internet bitching about me. There's a lesson for you there somewhere. I'm just saying.