First things first, I got in!!! 

Hi Sandy,

Now that the adrenaline is fading just a bit from this past week, I wanted to send a note to thank you for the help during the interview process. Particularly coming from a non-traditional background, doing a mock interview with you was so helpful in understanding what the adcom would have questions on and how to make sure they clearly understood my story. When my interviewer called me on Wednesday, she mentioned that my story stood out and I’m positive that it was your help which helped me communicate that story.