you have to talk to your husband and 99 to make sure that your family is on the same line.
Cannot let the helper think that she has sir and 99 to 撐腰.
Ur husband has to know that he is not doing you a favour when he (乙水)返佢, he is just making matter worse.
your helper has to know that YOU are the one who decide if she is going to carry on working or get fired..
YOU ARE THE BOSS. NOT SIR.
My husband make it clear to my helper that everything has to ask me first, e.g. if my helper ask him for permission on something, he will say 'i'll check with my wife first.'
Your husband has to learn and do that too.