Yet again, no one does.

Like what happened back at her classroom, no one inside of the facultry meeting managed to inform her about her nude situation, either because some of them enjoyed the scene like Byleth...

"can you please tell her ?", whispered Seteth to Byleth.
"and why would i ?", he simply responded while taking a good look at her body.

...They couldn't manage to get the right words to tell her like Seteth...

"Hey Manuela!, have you ever stopped to consider that what you're doing is wrong ?", shouted Seteth to her.
"Sorry, i won't drink ever again in the job, i promise...", pleaded Manuela.
"What ?!", he simply exclamed.

....Or because they feared what would be her reaction like hanneman...

"Emmm...., Manuela ?", said Hanneman
"Yes ?", she replied.
"Emm...i think that there's emmm....ehh", he said as he struggled to say anything.
"Is there something wrong with me ?", she exclamed annoyed.
"ehhh...nothing, forget about it", replied Hanneman as he gave up

And so, the facultry meeting came and went, and yet, no one there managed to notify Manuela about her nudity, leaving her still in the dark about her situation by the time the meeting ended.

"well, i promise i'll do something about my drink problem, but i need to go somewhere else, bye!!", said Manuela, as she once again, went into the academy's hallways completely nude and unaware of that.

"This is going to end bad, isn't it ?", exclamed Hanneman sweating.

"Yes", simply replied Seteth, as he feared how big will be the damage to the academy's reputation once news of a teacher strolling around the school naked with no one stopping her, go out.