It's a new century and every incident like this should automatically trigger seizure of the driver's cell phone.
This person got away with murder because of an outdated law. In all such cases the penalty has to be severe.  A life has been taken. Take away the driver's licence fo long enough that it hurts. Raise fines to many thousands of dollars. But I think that if this driver had to spend a bit of time in a jail cell she would never text and drive again.