You're resilient and one of life's fighters. Thats good, without it, you'd be living a life similar to your sister, who complied because it was easier. This reminds me of the phrase, which had its basis in religion but I'm not using it in a religious sense, "there for the grace of god go I". The act alone of leaving your family behind and forming a life for yourself rejecting the abuse proves you are a success. This is without all of your achievements. Holding down a job is something, many, who've suffered as you are unable to do. Just remember how amazing you are, how much you are ready to protect and care for yourself and maybe think of this when you're feeling down. And be proud of yourself. You deserve to be.
I understand your loss of identity from losing your job. I do, however, think it is a good thing because it took you away from another bullying environment. Having been conditioned to accept abuse, you did not protect yourself from it when coming face to face with it as an adult. You will find another job. Perhaps not the job. Perhaps you want or need a new and challenging job right now. Or perhaps you need a less challenging one, which help you regroup.
I hear you've had a lot of therapy. You asked a question about whether or not something was abuse, which indicates you still sound confused. Counselling and therapy can be life long. Often we will reach a plateau i.e. as far as we can go for now or have learnt everything possible from the therapist. Even an experienced therapist is only one person. At this stage, we take a break. Perhaps for years. A difficult life event will jolt us into realising we are in further need of therapy to release our pain, which will take us somewhere else in our healing. Your difficult experience at work has perhaps been that jolt.
All I can say is be kind to yourself and take the time you have on your hands to do what you need to do. Perhaps right now you cannot afford or do not want more therapy. Whatever you decide, it will be true to you and your own personal values.