<human>: Give me a shortened version of the text

Hello /r/relationships! I have a situation that I want to ask you about and see if I can do something about it. 

I've been working at my company for about 10 months now and everything has been going alright until the last 3 months. 

Over the last 3 months, my boss has been asking me to stay later on my shifts. I work the grave shift so it's normally from 10 - 7, but she has been asking me to stay until 8 or even 9. At first, I didn't mind it because at the time, we were losing people left and right and needed the extra coverage and I was like, "Over time? Awesome!" 

But recently, it's gotten to the point where she doesn't even talk to me about staying late. She just assumes. She'll leave a note telling me to stay until 9. She'll tell my coworkers that she spoke to me about staying 9 and they would pass it on to me and I would tell them that I heard nothing about this. 

You would think in this day in age, she would call or text me to ask right? But she doesn't. I always find out when I get onto the shift. 

I feel like I'm forced to stay because I work in a unique place that there has to be at least one person there. There are times where I can't stay until 8, but I don't have much of a choice.

What can I do about this? I feel like I have over extended my niceness about this and I need to start putting my foot down because I've been covering a lot of shifts due to people quitting while doing a grave shift. And it's starting to affect my sleep schedule and my health. I'm getting sick more often and I'm more stressed out and have zero time to take care of myself other than to sleep and eat. 

I go see my psychologist every few weeks and I had to cancel a few times because of the sudden expectancy of having to stay so late.
<bot>: Boss hasn't been respecting my work hours to the point of not even consulting me about them. What do I do?