Welcome to PC Stanley
I am sorry your mother was not the type of mother who protected and loved her child - she sounds toxic - you gave her a 2nd chance and she blew it - sometimes we just have to give up on relationships that are toxic for us and do the best we can for ourselves - I think thats what you've done. jmo but I think you did the right thing
Are you seeing a therapist?
__________________
Its not how many times you fall down that counts 
its how many times you get back up! 
(Thanks to fenrir for my Picture 
)
When you have come to the edge of all light that you know and are about to drop off into the darkness of the unknown,
Faith is knowing One of two things will happen: There will be something solid to stand on or you will be taught to fly.
by Patrick Overton, author and poet