Yes you are right! Hong kong people have the mindset of the chinese in malaysia is call 马来仔. My cousin in Hong kong always in front of me said, 你们马来人.......Hehehehe
interesting if it is true, for 2nd generation Chinese, the Chinese in Cambodia prefer to speak Khmer between each others, the Chinese in Australia also prefer to speak English, despite they can speak Chinese. So I am not surprise if between 2 young girl, they mainly speak Malay.