Although you indicate that your children were not physically injured, you say that they were "sore" for the next few days.  Soreness is a sign of physical injury of the soft tissue variety.  If the girls were sore, they should have been seen by a physician following the accident to evaluate them for injury.  It is difficult to prove there was any injury without having sought out the opinion of a medical professional.  Insurance adjusters begin evaluating injury claims by adding up the medical bills for treatment.  Since your girls had no treatment and, thus, no medical bills, it is unlikely they will get much, if anything, for their soreness, pain and suffering and the inconvenience of possibly having to attend summer school from the other driver's insurance company.  I would ask for a small amount, such as $500-$750 for each of your daughters and see if the adjuster is willing to negotiate a settlement based on your word regarding their injuries.