How did you come to this conclusion that it's only Oneworld?

Did you sought the services of a TA?

Just one look at this and it's obvious thatit can also be Star and in additional to your preferred choice of Oneworld. However did you also know that you can take SQ/VS option , or MH/VS/HP, or self made RTW combining CX with BA (possible from Oz)

Your question is not about Oneworld but rather you want us to find a fare for your friend. The choices are limitless.. but just simple "RTW" for you is not enough... you really need the services of a TA in Oz to help your friend. It will be too complicated for us I think to tell you, and then you tell your friend what to do.

For such a wide range of options available, it is best if you seek the services of a TA specialising in RTWs from Australia.