Something I like to do when trying to jump start interest in a character is look for a source of inspiration. What characters or ideas have I seen in other forms that I would like to explore myself, albeit in a unique fashion? Say you're a Mass Effect or Dragon Age fan. There can be a place gather ideas and build a foundation. A good idea would be to separate the Au Ra aspect and focus on personality. Allow that to fuel her backstory; how she will react to the ideas you have and etc. That way you have a better template to work with when actually RPing. I've always found going into a character without any sort of plan can hurt my general interest because I'm forced to think how they will act instead of knowing, and that just pulls me out of the immersion.
That being said, if you continue to struggle. Don't pull your hair out. Sometimes, an idea just doesn't work out. It's disappointing, but in my experience, you are better off letting go than fighting a muse that isn't happening.
That being said, if you continue to struggle. Don't pull your hair out. Sometimes, an idea just doesn't work out. It's disappointing, but in my experience, you are better off letting go than fighting a muse that isn't happening.