Since Yin is ethnically Chinese, I think Chinese art forms would be appropriate for this project.
As it’ll be animated, I’ll arrange a simpler version of these art forms.
Chinese Paper Cutting
-Red paper (Red is symbolism for luck)
-Lines touches each other
-Outline and fill base, use of shadow is unlikely
-Rough and strong brush strokes
-Watercolour on sumi paper
-little use of colours
I’ve also thought of using simple line animation, which could accentuate her rough life and hardship, as well as her old age appearance.
-single line strokes
From these images, I tried out different styles in a small piece of paper