I thought the whole "mirror" thing was very odd, and wondered if Scott was stalking or spying on Amber, and letting her know about it in an oblique way.
Whoa! That's a thought.
If Scott's comment about the mirror was an indication of spying on Amber, if she didn't pick it up, I'll bet the police caught onto it!
That was my thought when I read that.
Didn't the police move Amber to a safe place? It would be interesting to know if it was right after this conversation.
OR that he installed a secret video camera in her house.