Oh, Rocket was glad she couldn't actually understand Groot right now. Let her think Groot was worried about her replacing him... that was a good way of changing the subject.
"Oh... I've been working on new alarm system for Freedomtown. An idea Pete had that he knew only I could make happen. Basically, it's a system that alerts the security team anytime someone who isn't supposed to be there IS. Everyone who comes through that portal, including me and you, has a unique energy signature. Anyone who's here from Earth is scanned into the security system. So it's a matter of making a system that automatically alerts Cosmo anytime someone without clearance or without that energy signature enters the city."