likadeuce mentioned that Kitty was turning into Dark Willow from Buffy, which I quite liked as a correlation, simply because I think Joss has an interest in repression and control. Both Emma and Scott repress things - in his case, his decision about his powers - he actually decided to let them be out of control and then made sure the rest of him was always in control. Emma repressed all her guilt and so became an easy target for Nova. Both seem to be repressing any emotional 'chat' until the mission is over.

Kitty is no longer repressing; Nova broke her free. Now, she is having emotinal chats with Piotr immediately during a mission, she is trying to regain control by asking for more time, and as you and likadeuce pointed out, seems to be nearing the point of no return as she pushes that gun through Agent Brand's head. I think there are definite Wesley overtones as well, as Joss has done a reverse Season 5 on Kitty by giving her hideous memories rather than erasing them.

I'm liking how Piotr is being referred to as a murderer in both the Breakworld plotline and in Kitty's false memories. Resurrected to become a killer? Colossus is a vampire?