Percy has some burny lacerations and other random bits of bs that can more or less heal on their own. He also has Thicknesse (sea urchin) and Wheatbuck (field mouse) in his pockets. He is happy to go looking for people or to help drag them to where the healing is taking place. To take his mind off where the FUCK is FRED, he is going to start making a list of known, missing and injured. Because lists make people feel better.
Gerald is pretty super dead.
Jessamine is available to heal or search or find people. She is not hurt and is nose to the grindstone. But when she sees that Leon and Alicia are alive and super NOT DEAD she is going to split into a huge grin. Then keep working.
Remus has some head trauma and field dressed knife wounds that could be properly healed later but he is not the worst of the lot and says pay attention to the ones who are actually hurt. (Emily is it okay if he brings Tonks to the others in his arms since she broke her ankle?)