"He is not!" Okay, so he is a little on the physically weaker side, but she's planning on fixing that. She just didn't have a whole lot of time to do it after her arrival. That, and it sounds like a thinly-veiled threat. The more he stands there, the more ready to attack she is, muscles tensing in preparation to leap. "You go back the way you came and don't come looking for Sollux again."