Well there's certainly a change in her attitude compared to yesterday.
This was to in response to this:
"I didn't think it was a crime to do so ... looking back it was very stupid, very idiotic of me," Noudga says about the letters.
by Adam Carter 4:34 PM
IMO, she isn't saying it was idiotic or stupid of her to not turn in the letters. She is realizing it was stupid and idiotic of her to not destroy them like DM asked.