Pepper watched both girls seemingly back down from each other. Sometimes a gentle interruption reminding people that there were other guests around was all people like that needed. So, she continued to the bathroom to gave a moment's peace.
When she returned from the bathroom she heard the same two voices and frowned. Maybe this was more serious than Pepper had originally thought. Instead of trying to get into the middle of it again, she hung back around the corner and listened for a moment.