Technically she's only a senior nurse, but probably got skills to match most doctors. Certainly outranks most of them.
Something else to keep in mind is that not only SF types can be on exchange. In my first unit we had a Canadian, in another was one of the most hardcore British Captains I've ever met. Even with three broken ribs they were still doing as much, if not more than everyone else, and since it was Canungra (arguably Australia's toughest place rivalled only by Tullly)....
Canungra is the jungle warfare centre and conducts courses at Plattoon level and above (Tully focuses on the smaller units and individual skills). It's so tough that almost nobody makes it through without an injury of some type - one in my Battalion had an epileptic fit on day two brought on by the physical stress, first one in his 28 years of life (he was medically discharged shortly after). I was lucky, I only suffered heat exhaustion and had to be stretchered out to hospital.