hopefully they are home now to take her to the vet? internal injuries are the main concern. head trauma, since she is bleeding from the nostril, is the biggest concern.
There really isn't much you can do for at home treatment in either case. Even if she looks better this morning, vet has to be a priority. Dogs are good at hiding medical issues and internal injuries can be a slow painful way to die and by the time you notice something is off, it can be too late