No....she always just has been negative. Her first husband even told her that if she couldn't say anything good or nice then don't say anything at all...
i just gets overwhelming to listen to so much negativity day after day. And then for her to tell me how to do everything...cheeze and rice, how did I manage all these years without her

? I am just am totally burnt out for giving so much and need a break. I will be ok. I keep thinking to meself "And this too, shall pass."
"This too shall run it's course." That's what I said seven years ago. Truth is, it's only going to get worse and require more time if you let that happen, as I did. Doing the "right thing" becomes a two-way street eventually but once people have become dependent on you that two-way street becomes harder and harder to access. Every time you do get a chance to take a break the phone will ring, which pretty much invades your break over and over again until there was no break at all. "Don't wait" for an opportune time because they will seldom come, if ever. Schedule things in advance and let everyone know that you'll be, "out of reach except in the case of extreme emergency." If you allow it you'll just keep getting sucked in deeper and deeper simply because, "you're the only recognized caregiver." As things progress doctors, hospice, visiting aids, pharmacies, you name it, they'll all be needing to talk to you all the time. So here's some food for thought:
1) Adult day cares. I started using one. They can be found for as little as $5 to $10 per hour and many of them will even offer 24/7 extended stays. "Use them!"
2) Family - sometimes you just have to draw the line in the sand. "Today is your day. Period!" If you don't do this they will always have reasons why they can't. Don't be afraid to upset this boat if you must.
3) And last, your mother's family doctor can really turn you onto some good options as far as getting help and they can even hook you up with people who will help you find those adult day care facilities. This same doctor can also order home health aids, etc., that are paid for through medicare and medicaid. "Take all the help you can get!" Did I mention that my father has Alzheimer and compared to mother he's the easy one. So I have two at age 87.
And on a closing note, my mother has grown so nasty, hostile, and hard headed she fell and hit her head on the concrete the other day. When the ambulance arrived they took the concrete to the hospital.

If it wasn't for humor I'd be insane by now.
Trust me, if you let it happen the 24/7 caregiver thing can "and will" take over your entire life if you allow it to. Don't allow it to happen! It can actually start to wear on your own physical and mental health if you do. I finally had to put my foot down, draw that line in the sand. "I either get some time away or I'm out of here. Period!"