mar·tial
[mahr-shuhl]
adjective
1.
inclined or disposed to war; warlike: The ancient Romans were a martial people.
2.
of, suitable for, or associated with war or the armed forces: martial music.
3.
characteristic of or befitting a warrior: a martial stride.

Doesnt necessarily mean martial arts like a ninja. Could be anything to do with combat. I should note im basing this off your post and havent done the quest in game to see more of the context of what shes saying.