They hyped up Melissa R's return as a mentor, and it probably wouldn't have looked good if her "projects" didn't make the team - ie Brennan and Caila. I say if a TCC hides from K&J during rehearsal, then make that her last night.
I think Caila did once she stopped over thinking it. Breelan - she never seemed to pick up new choreo without her nerves doing her in. For example, the Halloween halftime performance and her scared look on the big screen. Like they tell them at TC, even if you forget, smile and keep going.