I have been a caregiver for my mom for 11 yrs. she is now 90. i find myself getting angry at her for little things. then i feel so guilty and bad about it. she says the same things over and over and can't remember anything. i try to be patient. i know i probably have caregiver burn out but there is no one else to help and she will not go to assisted living. i am so tied down i can't have any kind of life.
It sounds like your mother has dementia. This is not going to get better. Probably it will get worse. You've been caring for her for 2 years. Is the dementia new? Can you care for her for another five years or potentially longer? Can she be left alone for short periods? What are her impairments?
What are your mother's finances like? Can she afford to pay for some in-home care? If not, would she qualify for Medicaid?
Either with her paying for it or by applying for Medicaid, please, please, arrange for respite for yourself. Having a few hours to yourself each day while an aide takes over the care can do wonders for your attitude and stamina.
And also arrange for some longer periods of respite -- a few days or a week away once in a while.
Nobody can be 24/7/365 caregiver for someone with dementia and retain their own sanity.
And if these measures aren't enough to restore your enthusiasm a bit, then take steps to get Mother in a care center. Your life is important, too.