Another company I believe is Apex cabin crew training in Queensland. However as Sinala says, be vary wary of putting down money (especially a LOT of money!!) on so-called 'training' courses, as most airlines like to train you 'their' way... all have their unique policies and procedures, as well as service delivery.
As for heights, don't get discouraged if she doesn't meet requirements for bigger airlines. Some smaller or regional airlines operate aircraft types with an UPPER height limit due to the cabin size... researching which ones have these fleets may help. Some airlines also go by 'arm reach' rather than discounting you on 'height'... Emirates for example is 212cm barefoot on tip-toe... so if she can reach that then she's ok for Emirates.
All I can say is do your research as thoroughly as you can... try to find people who work or have worked for the airlines, ask them about their jobs, call the recruitment offices and ask for application informatio, minimum criteria, etc etc. The StaffCV website lists quite a few Aus/NZ airlines and their minimum entry criteria.... (not sure if I'm allowed to link to it here, but a quick Google should do the trick)
And, good luck for your girlfriend!!!
Sky
PS - Any customer service/'people-person' type jobs/work/volunterring she has done should also be highlighted on her resume!!! It is what they want!!! =)