Erin visibly considers those words for a moment before she nods. She makes a 'stay here' gesture with her hand before moving Some Distance away to have even the semblance of privacy while she whispers a speech-to-text message to Dimitri:

Dimitri. Please drop all non urgent activities less important than someone dying and proceed immediately to the buffet. Good news incoming I believe. Realize I am a giant fucking hypocrite to say this given that I never use one but please also bring your travel buddy just in case but repeat pretty sure this is good news.

This accomplished she waves for Dedue to follow her as she Leads The Way.