User blog comment:Gundam Legilis/Destiny In Depth/@comment-4010415-20160111012847

Ozpin's group drilled into Pyrrha's head the fact that the Maidens are top secret and why they're secret. She didn't want to risk saying something she wasn't allowed to. As for shoving Jaune up a wall... it's the mere fact that she did it. She was already emotional as it was, and when she accidentally slammed him into a wall, she felt that she had lost control of herself, which can be a very upsetting thing. Hell, when I screw up and break something in a fit of anger after my arms just act all on their own, I tend to end up crying about it, even if it's no big deal due to being something easily replaceable. I cry because I hate the fact that I lost control of myself and lashed out.

Technically, Cinder didn't tell Mercury to stay in the warehouse. She told him to lay low until the end. Why did she and Emerald leave the warehouse while he stayed behind, then? Well, they certainly were not going to the colosseum for Pyrrha vs Penny. Yang vs Mercury happened at night. It's daytime at the beginning of Destiny. Thus, Yang vs Mercury happened the night before. It's possible that Mercury was left waiting in the air bus that Cinder and co stole, just in case they needed him or... because "the end" is near. Whatever the case, maybe things will be made more clear next episode.