There are a number of ladies who are at least part, but we often don’t look it. I’m half, but other than my high cheekbones and eyes, just look like a dark skinned European, so I just advertised as Caucasian.
If it is the aesthetic look you are going for, then a number of Asian ladies are very possible as first Nations. If it is the culture you are going for, Vancouver is definitely not the best place for that, as those of us who work indoors tend to be quite “white” With a somewhat limited practice of our language and culture.