What is this child to do after she finished high school that gets me confused. She has no where to go in America. Her mother is unable to assist her.
Thanks again for responding.
I believe this question has already been addressed in previous posts. There is no path to PR for her at this time and there won't be for quite some time. If she wishes to become a PR, she will need to obtain the education, work experience, etc. to qualify and be selected under one of Canada's economic immigration programs.
After high school, she will need to obtain a new study permit to continue living and studying in Canada at the college or university level. Assuming she attends an approved school and completes a program, she will qualify for a post graduate work permit once she completes her studies that will allow her to work in Canada. Ideally once she completes a year or two of work in Canada - she will qualify for permanent residency. However that's impossible to say at this time and will very largely depend on the level of education she achieves, the work experience (including skill level) that she obtains, etc.
If you want to position her as best as you can for PR, best option is to dedicate time to researching Canada's economic immigration programs thoroughly to understand the options and what it takes to qualify and be selected. She is still many years away from qualifying to apply. However I would very strongly recommend you do this research now since it may influence what further education she opts for, etc.