So my point was that I agree with the above posters. You must move past this. She had her reasons and the defining one was that she was deceived by a mind-controlling cult. Many people have been done in by the WTS. So if you want to assign blame, assign it to the Governing Body.
It is they who are ultimately responsible for the person your mother became. To be sure we all have free will and can listen or ignore what others say, but the GB is very good at what they do when it comes to coercing people to bend to their will.
My advice, then is to forgive your mother. Assign blame where it rightly belongs, on the shoulders of the WTS.