@0br0123, if she was one of the top students from her home country, yes she could have had a special scholarship from home, and therefore it would have been doubtful she worked because often the requirement is at least a 3.5 GPA (or if they have High Pass/Pass/Fail, High Pass mostly) to keep such a prestigious scholarship.
And if both your parents attended undergrad in your home country (I’m not sure from your post), and did very well afterwards, could you attend college in your home country too?