Her name is "Tess" for obvious reasons.
The Tesla Model S is my 20th car since I took my licence in 1986. I have named only three of them. I had a Ford Puma in 1999, called "Katta" (Norwegian slang for the darn cat), and then in 2016 i had a VW eGolf called "Bolt" (after the movie not the Chevy), and now Tesla Model S called "Tess".