Aha, I already can tell the four fiances already take measures against the false accusation thanks to Rufus and Pia.
I can't wait to see what's the "heroine" expression to make when it's revealed that everyone in that ball is against her.
First I can already know that Erin was in her territory when everything id happened so it's actually impossible for her to pour the tea to that Heroine's dress.
If I assume the Heroine is going to accuse Erin to tell someone to do it, Erin can argue back that the accusation is that Erin was directly pouring the tea without a third party.