Such an amazing artist . . . such a coincidence I would even have a connection to her.
Brandy (in my Margarita Mommy group) is married to Kurt Bombien. His cousin is Brianna Martray and she paints emotions. .. she used her hands (no brushes) and works on unusual materials sometimes too (like wood). You can see her fingerprints and her fingernail scratches in many of her pieces. . . her swirls of color and motion are exactly what I'd create if I had the materials at hand.
Hat's off to an amazing young talent. I will honor you on my "50 Things Before I turn 50" list by attempting to create my own "visual representation of emotion".