You are not a horrible or unreasonable person.
Do you or your mother see therapists?
It is okay for you to try to have a life.
What your mother has to say is from her depression and lack of good mental health. Try not to take it personally, even though it certainly sounds personal when you hear it.
You sound like a good and caring person.
You might want to look into “emotional blackmail”, which is when someone gives emotional pain when they don’t get what they want.
(((((xMandyRose)))))