[@Deos Morran] If she was on Taetrus and if she was CQC she would most likely be part of the hastatim, those were the forces they used to clear buildings and fight insurgency. They're special forces as well. But they have a nasty reputation despite their essential role. 

Civilians are former military though, they all know how to fight and serve as a militia in war. Not saying they wouldn't buckle eventually but they wouldn't panic like a human colony with mostly untrained civvies would.