Thanks for posting those pictures. I went to see what the Whitney webcam might have taken. I found one at 7:15 PM with the sliver of the moon lightly visible. But the picture didn't show the full circle of the moon like the pics above to. So looking to the left of the moon on the picture, I could not find any trace of the comet.
I've uploaded it, so you can see for yourself: http://www.whitneyzone.com/webcam/20130312191440.jpg
