Sterling would be an interesting take on the idea of naming her Silver. I like Gracie, because I think it fits well with Stellar. I also second the name Lilly, because I considered it for my new bunny. (My son ended up telling me he was dating a girl named Lilly, so I went with the name, "Happy.") Willow is a name that comes to mind when I look at her. Also, I think she'd make a great Starla, Gemini, River, Poppy, Whimsy, Lola, Winter, or Daisy. I could go on forever. She is so adorable. No matter what you name her, it is going to be awesome. Good luck!