I certainly did feel immersed in guilt, confusion and uncertainty, and that is because I thought underneath it all that my mother loved me, and I was her dd and things would come good in the end, and everyone has flaws but if I just did a bit more, tried a bit harder, put my effort in she would see what a good person I am. I never got there, despite forty years of effort. No sooner had I pleased her in one way, she was already complaining and demanding more.
I didn't realise I was being gas lit and manipulated and played - it took years and years to fully understand what was happening to me. I love my parents deeply, so I expected that they felt the same way about me, but they don't. They don't have the capacity to really love, they just want their needs met. You don't feature as a whole person with needs of your own, you are simply there to serve her (or that is how she sees it)
It is very painful to learn that you are not truly loved in any meaningful way, and your needs are not considered at all regardless of what happens to you. The golden child will always shine through no matter how hard you try to make a difference. It is hard work working through it.
The book that helped shed light on all of it for me was this one, and I strongly recommend it:
"But its your family" by Dr Sherrie Campbell
She encapsulates perfectly the FOG, the pain, the confusion, the desperation to make things right and then finally the acceptance. Read the book and it will give you some clarity, at least a starting point to start to feel better, to take control of this relationship to look at your mother for what she is rather than who you want her to be 