Shoot me now!

This is going to be somewhat of a rant. (I'm sure you've noticed that I do a lot of those).
So I worked the graveyard shift for my friend last night and this afternoon got a call from my boss railing into me about all of the things I did wrong. Of course, the only thing that I got out of her spiel that was actually my fault was that one of the residents was sopping wet when she got up this morning. Now, I would like to point out that this particular resident is wet most mornings, and the last (and only) time I worked a morning shift where I got her up she had soaked clear through two briefs and the sheets as well, because the night aide hadn't taken her to the bathroom at all. I did at least take her once and had to put up with her yelling at me because I was mean enough to make her do all the things that she's capable of doing by herself. I didn't do everything for her. OH MY GOSH!!! I am such a HORRIBLE person. I'm trying to keep her strong. Sue me.
So I'm now forbidden forever, from taking a night shift. Does this seem at all fair to anyone? I wish I could find another job that would be willing to hire me for only three months, but there never is anyone like that, and I'm moving in April. I cannot wait. For multiple reasons. This just adds to the list.
Okay. I'm done ranting now. I don't feel any better.