If I were you in this case, I will not care about the feeling of mother-in-law.
I don't know why you still care the feeling of mother-in law. Now you have a problem with your husband, you should solve your own problem with your husband first.
I will stay in HK. And let's see what will going on in future months. At the same time, I will think and prepare if I will move out and live alone with BB.