Board Thread:Spoilers!/@comment-26159109-20150928143524/@comment-1894786-20151114010206

ChocolatEyes613 wrote: ItachiIshtar wrote: Sneak peek: http://www.tvinsider.com/article/53358/heres-what-happens-when-merida-meets-mulan-on-once-upon-a-time-video/ So, Mulan is nothing but a sword-for-hire.... how is that honorable? Maybe the Empire and DunBroch are allies. The Emperor would send his most decorated soldier (Mulan) to help train the princess of DunBroch. She would be honor-bound to help Merida due to being asked by the Emperor.

At least, I hope that's the explanation that they give. Otherwise she is just a sword for hire, and honor doesn't really exist among mercenaries.