Uncommon Unique Female dog names?

I am getting a female puppy on Friday and i need to name it. My mom likes crazy names and i don't. In the past she has named her dogs Arlen and Ryker. (they were males) My Mom agreed for something in between. She said she would go for a "regular" name that is unique. We are getting a golden retriever white shepherd mix. My mom likes the names nina and xenia. I hate those. We both agreed on the name Fergie. :) please help with it's name. Nothing crazy like food. People names are fine. Also do you think the names Erin, Bree, and Aqua are common names? thanks