Doesn't make sense to me Mr W, since she was clearly post student age and she had been here for a fairly long period of time beforehand. I would have guessed she was the type to use her earnings to start buying local real estate.
PS: You are using politically incorrect language !!
Interestingly, a Chinese social worker familiar with Scarborough wrote to City Hall that this line of work was not looked upon as highly immoral within that immigrant group.