Seriously stressed doesn't cover it. Yukiko slumped over the desk and nearly banged her head on it, feeling like she could actually speak up for the moment.

"I'm sorry Chie. Everything's been getting out of hand and then trying to run this place and trying to figure out Calice and her whole deal...I've been swamped both physically and mentally for awhile. Even Dante had to stop me a few times from overexerting myself during our training time."

In other words: Priestess tired but feels like she has to keep going for everyone else's sake. Remind you of a certain someone? Apparently when Yukiko got the Protagonist title from Yu, she also ended up taking the 'does too much work' part as well.