I just can't believe...
... you wrote this.
In my opinion,(at least the education my family gave me) we must respect and support our parents, no matter how wrong they are.
With the age, the problems become much frequent and they start to give us a lot of work and troubles, but it's not a reason to just get rid of them as we do with an empty bottle of coke. One minute after she dies you'll wish you had one more minute to stay with her and tell her how much you love her.
I'm sure, when you were a baby, you gave her hundreds of days and nighs changing our diapers or crying in the middle of the night and I'm sure she was there for you. Is it correct to compensate all this "service" she did to you by tossing her in a nursing home?
Worst of all, say that in Christmas? I'm really shocked. It sounds like cruelty. I'm sorry if I'm overreacting to your post but that's what I understood.
Nursing homes (in my opinion again) are for very few cases where the ancient needs special medical/nursing attention almost 24/7 and it's impossible to take care of them at home.
My mom is 75 years old, the first symptoms of Alzheimer are starting to be more frequent and also her mood changes in seconds. Probably in a few months she will stop driving, in afew years start using diapers, etc. (does "diapers" reminds you something?)
She is my mom, and I will take care of her even on the worst moments until her last breath.
Your mom needs your help, not your ignorance. And maybe you need some help too to learn how to handle the situation without being too affected or stressed. It's not your fault, nobody borns knowing everything. I'm sure you can learn how to handle it. Believe me, if one isn't psychologically ready to take care of an ancient, it can be really scary, stressing and awful to the ancient and to the keeper. If you do the right thing, you'll discover a way to handle all those tiny incidents that together made you reach your limit and explode like I saw above. Also, it will make you, your mom and all the other members of your family much happier.
And don't expect her to be perfect too, nobody is!
By the way, in some years, your daughter will have to handle the same situation with you. Would you like her to say she's going to put you in a nunsing house and she doesn't even cara if it has heating and hot water? Think of it!
I hope you can find the best solution that makes all of you very happy.
And merry Christmas to you, your mom, your daughter and all your family.