Is she a private applicant or is she looking to be part of a formal school? I'm a private applicant, I didn't sit IGCSEs and just self-studied for IAL. I know people who did the same, but sought private tutors instead, plenty of options online. Then you just apply to your local exam centre for the exams.
If you're looking to actually join a school, I think that'll be more difficult, since most international schools will require IGCSEs. Also note that some unis require IGCSEs to be summited with IAL grades. Hope this helps.