Your not supposed to call 911 when the damage is done. Nice ryhm , huh? Yeah, beleive it or not, when a house is on fire, someone is breaking into your or someone elses house, when someone is dieing for whatever reason other stuff that is a life or death situation, THAT is when your supposed to call 911.
Do you know why? Because when someone calls 911 and it ISN'T an emergency, then that takes the place of someone who could be trying to get through that is one of the above listed emergencies and needed help NOW, not after you get done phoning in that someone has hit and run with no injury to anyone.
If someone was hurt, sure, you never know. But you said she left after she hit the car. so she and the baby were ok ( hopefully the baby was in a car seat. ) , no one was in the car she hit.
Not a 911 emergency. But, I agree, people do suck!