Since her last name is Wong, does that mean her family is Chinese from Cambodia?

Some of the people who left Cambodia, Vietnam, Laos, Thailand, Philippines, Japan, Korea, Malaysia, Indonesia, Singapore, etc are of Chinese ancestry or mixed ancestry (Chinese+Cambodian, Chinese+Vietnamese, Chinese+Filipino, Chinese+Thai, Chinese+Japanese, Chinese+Korean, Chinese+Malay, Chinese+Indian, Chinese+African, Chinese+Portuguese, Chinese+Dutch, Chinese+British, Chinese+Indonesian, etc).