How far is she willing to travel?
Medicine is not the secure career that many people think it is. The UK does not apply resident priority for Doctor recruitment, so those finishing the two years Foundation may find themselves competing with hundreds if not thousands of doctors from across the world for entry level jobs. Overseas doctors are offered expedited family settlement so some will be willing to offer a lot of experience/seniority to obtain an entry level job. As a result in August about half of those finishing Foundation this year were without any work. DD only picked up one shift, an hour away from home, in the six weeks. There is now an effective army of underemployed doctors, both UK and overseas trained, who work on a zero hours basis with little chance of progression.
DD has been very lucky. She is now covering an Associate Specialist post in an interesting area which is both demanding and rewarding, though it is slightly grating that she is paid as an F3 rather than the normal rate for the job. (It was interesting attempting a Consultant to Consultant referral to someone who knew her as a F2 last year!) She is learning a huge amount but such experience will not help her get onto training. Probably only 5% of those finishing NHS Foundation in August secured training places. Streeting is offering to help with this, but competition levels will still be high and DD simply does not have the time needed to prepare for an application even if, as a locum, she were able to access NHS data that would allow to carry out worthwhile research.
So it's Australia in the Spring. Slightly frighteningly more of her hard working and competent F1/F2 peers will be working at a single Australian hospital, than she knows who have secured any form of UK training position. Indeed Australia are likely to take 25% from her Deanery year group. The NHS is achieving short term savings by bring in doctors from elsewhere and so keeping entry level pay rates low, but it is a mystery as to why the NHS should think that they can survive in the long term without offering proper career prospects to those the taxpayer has spent to much educating.
In short, medicine is a great career but the NHS is an awful employer who does not value or develop their staff. DD, again, has been lucky enough to pick up a rotational contract in her preferred speciality in the City she wanted. After a year she can apply for training in Australia. So she will probably still be able to have the career she wants, but not in the UK.