I feel like you're missing out on a lot of potential by not employing much body language. Like, if you were to cover her face, you'd be hard pressed to tell they were each supposed to represent a different emotion. I don't know if you've ever encountered any of Endling's work here on DA, but he's fantastic at expression. fav.me/d4zaey1 and fav.me/d7huzbd are good examples, I think. It'd be worth taking a gander & trying again.