Forgive my ignorance at your culture, but if you move back to Asia, MUST you stay with A? Can you not live with other people? or is that taboo?

Consider that while you may make more money , you will also spend money on therapy and medication to cope with stress of working / living somewhere you don't want to be. Eventually your health will suffer and you will grow resentful of your boyfriend.

Living your life in order to please others is a recipe for disaster. Having suicidal thoughts was a sign that you had lost hope of things getting better. Now you are considering going back to that place? I think your personal values are in conflict with what is expected of you.

For myself, i find guilt, fear, shame and obligation to be poor motivators.

Stay put.