If you want some advice for your friend... tell her NOT to do her whole HSC by OTEN... unless she wants to ruin it!!!!!!
Literally... OTEN is very very hard to stay motivated with.
As i said before, I do Legal Studies by Dubbo and Accounting by OTEN... i love legal, and have a great teacher that rings me weekly, and i can contact her whenever i want, there is a steady weekload of work and its pretty good overall. (my best subject at the mo)
in comparison.. Accounting by OTEN is terrible!! They sent us a massive textbook at the start of yr.11, and assessments throughout. we had no teachers really ring us, and email was the main form of contact. we were then dumped straight into the HSC for accounting at the end of our yr.11 course (nov. this yr) in which they came in with amendments halfway through!!!
personally, dubbo is better than oten, but it depends on the learner i suppose.
i wouldn't do more than 1 or 2 subjects by dubbo/oten/openHS... there's nothing like a face-to-face teacher.