Cool character! i think something that could help is maybe add some culture related patterns to the coat to help signify that she belongs to a certain culture (could be made up or from real life, up to you) but that could really boost some visual interest in the character and make the character even more bad ass
I like the design, if that is fur on her body you could also consider shaved lines, symbols or art into the fur similar to how people get buzzed into their head at barber shops. Also I think your color palette is very safe with such subtle tones which is great, but I would like to see something that pops with a more powerful saturated color. Like for example maybe make her iris is a really powerful blue or maybe the areas of her skin where you generally see warmth are a strong accent of her normal skin color. If you are going for hard realism then you may disagree with this entirely. Keep it up man!