Maybe they can talk, try to regroup, but for the most part, I think that's when Class 1-A really gets introduced to Sylvia and the others. Jack will explain what's happening to the group and become somewhat of a student leader for them, as well as a scary protective brother. Kirishima and Deku could kinda give Sylvia a full analysis or something and use that to determine what she needs and stuff (like protection and proper care and stuff). It's also good experience for Class 1-A technically, since they need to know how to take care of someone who's in a delicate situation in emergencies. As much as Sylvia doesn't like it, she's the victim and they're going to have to protect her (even though she wants to be a hero as much as they do, probably more).