As someone who works for the police I can tell you exactly how it would go...
Police how can I help
Well a learner driver pulled out in front of me and had to apply my brakes hard.
Oh ok was there a collision
No I managed to apply my brakes in time but the learner driver just drove off they didn't even stop and get out which I know is illegal
Sorry, let me get this right you think it's illegal to drive away from a non-accident
Yes I had my baby in the car and I had to slam on, I have the car reg would you like it?
For what?
Well as they have broken the law driving away without checking if I am ok, also to send someone round to have a chat with the driving instructor about the learner pulling out of a junction
Ok, unfortunately we don't send police round to people's houses to inform them that they "nearly" caused an accident, especially learner drivers, if the police did do that we would have no resources for solving actual crimes.
The rest of the conversation would depend on the other person..... in the ops case she would probably flounce off the phone without so much as a thank you or goodbye... never to be heard of again!!!