Hey thanks, see ya never.

Hi Nikki,

Thanks so much for having attended the interview, earlier this week
for the _______ position available within ______. My
apologies for the delay in getting back to you...we were waiting on some
forms to be completed and approved. You were not the successful
candidate for this position and I'm happy to give you specific interview
feedback, if you wish.

Overall, you interviewed well and seem live a very driven and competent
individual. After speaking with you, we felt that the position would
not hold enough of a challenge for you and that it would not be a good
"fit" with your skills and interests.

Please do feel free to call me should you wish to discuss the interview
more specifically. Best of luck in your job search!