Scott nearly jumped out of his skin when he heard Melissa. Since becoming a wolf people didn't just sneak up on him anymore. However, he'd been so hyper focused on Stiles, he hadn't even noticed she was there. They were lucky he hadn't just pissed himself.

And then it dawns on him that his mother had just walked in on that and omg..

Just..

"How long have you been standing there?" Because seriously, he had no idea.