Entry into Hong Kong

I am travelling into Hong Kong and then China for business purposes. I have travelled many times there and have a valid visa for entry into China. I have a life partner living with me in South Africa. She however has been deported out of Hong Kong before for illegal working in Hong Kong. I need to know if she can travel with me to Hong Kong and then to china. I will be responsible for her and ensure that she exits out of Hong Kong, with return airplain tickets etc. Is this possible and what do i need to do to enable me to travel with her through Hong Kong.