ok - then presumably she won't have the matric? If she doesn't, then she will need to do further qualifications if her goal is to go to University. Does she have any idea where she wants to go, and what she wants to study?
This will be key to figuring out what the best plan is.
The regular route in Scotland to University would be to do Highers at age 15-17 and then sometimes Advanced Highers at 16-18, then University - for either 4 years (if just with highers) or 3 with advanced highers in Scotland, or 3 years with advanced highers in England/Wales.
She will be older than the students in Scotland doing these qualifications, and depending on what she ultimately wants to do (Uni in Scotland, or England/Wales? or something/somewhere else?) where you are in Scotland and funds available, it may be better for her to explore doing A levels - which would probably entail a private school, or attending a 6th form or college in England if geographically possible.
Another alternative might be an International Foundation Year, if a relevant University offers it - these are designed to bridge the gap for students who have studied overseas and may not meet the normal qualification criteria because of that - for example
www.leeds.ac.uk/international-foundation-year/doc/ify-entry-requirements
I think she will be liable for international student fees for University.