Child Hit on Cycle Crossing 40MPH- Red Light Runner Gets Driver Improvement Course

I've followed the forums a long while, but never needed to post...

Welcoming any opinion and advice on the following:

My 11 year old son was cycling to school last Friday along a cycle route in Southend & crossed the A127 at a recognised controlled cycle crossing.  
As he does every day, he pressed the button & once he got the green he checked that the cars had stopped (I'd previously warned him to double check people actually stopped).

He said that the car in the lane closest stopped & he started to cycle across past the car stopped in lane 1 & was hit by a driver in lane 2 of this two lane 40MPH limit road that had not slowed at all- he said he simply hadn't seen her coming at all.  There were several witnesses that agreed that the lady driving had gone through a very solidly red light at speed , passed a stationary car in lane 1 & hit the front of my son's bike, sending him cartwheeling down the road.  One of the witnesses said that her two children had to drag my son out of the road afterwards, which she informed me traumatised them.  The Essex air ambulance was dispatched, along with paramedics & an Ambulance Operational Commander; the police were on scene quickly & shut the road for investigation & they took statements from witnesses.  

A witness called my son's school, who in turn called us- we got there within about 15 min.  

The lady driving maintained that she had gone through on a green light & the policeman that shut the road said it would come down to my son's statements & those of the witnesses.  

When the (white hat) traffic collision investigator arrived he quickly explained that the course of action would be determined by the severity of my son's injuries & that they had a unit waiting at Southend A&E for a verdict.  He swiftly told me that the lady had only passed her driving test a couple of weeks ago & that he himself had knocked a child over by accident not long after passing his test.  
They had me wait on the verdict from the hospital before they would let me take his bike, as it would be evidence if there was the possibility of a fatality resulting from his injuries.   

The woman's car had a smashed near side head light, the entire mirror assembly had been smashed off & the almost flush indicator light had been ripped out, with marks & scratches all down the side of the nearside of the car so it was a heavy impact, but thankfully my son did not make it out onto the front of that car.  That fraction of a second saved his life.  

He was also wearing a fairly new cycle helmet & that was comprehensively trashed, with scuffs all over the left hand side of it, creases where it had deformed & a tear right through the polystyrene liner on the left side. 
The paramedics, A&E doctors & the police all emphasised that it definitely prevented him suffering serious head injuries.  

It seems that the most serious injury he suffered was a broken right wrist.  He's got an appointment to see a consultant today to find out recovery time, but mum bought a lottery ticket for the first time in 25 years.  He has bruises & cuts all over his body, a very painful chest & ribs & he couldn't walk unaided for a couple of days.  He has been waking up at night suddenly & he asks for his door to be left open in case he needs us, but seems happy to settle himself back to sleep.  

He's a very keen & competent skier & we've got a trip in just under a month, where he was going to do a week of slalom and ski cross training.  That's so physical that I cancelled that straight away.  
He also races motocross & he's supposed to have his first race for his championship in just over five weeks- he's never going to be strong enough for that with a broken throttle wrist, so he scores zero for the first one at least.  
There's also the question of what this does to his confidence cycling to & from school- we work shifts & walking takes him about 40 minutes, compared to 10 mins gentle cycling. 
He had a really good bike that he was very proud & careful with- a Specialized Sirrus 3.0, which now has scratches all over the frame & forks & so much play in the headstock that I doubt it can be repaired. I can't find the receipt, but I'm hoping that we can just ask the driver's insurers to repair or replace the bike until it's usable again.  

So the positives: he's alive, not in a coma & actually lasted a whole day of school today, where he had to walk by himself; the driver actually had insurance & didn't leave the scene.  

Negatives: we got a call from Essex Police today & they've decided to offer the woman a driver improvement course.  Apparently, faced with several witness statements contrary to her own she amended it, admitting to going through an amber light.  The police mentioned again that she had only passed her driving test a couple of weeks ago & they said that she hadn't been drinking or been on her phone.  They reasoned that the greatest benefit would be a driver's improvement course, rather than points.  I believe that the standard would be 6 points & as a new driver she would have to retake an extended test, which I believe would be more beneficial & appropriate.  But I also believe that Essex Police know that she's highly likely to contest this in court, costing them time for at least two of their officiers to attend.  

I'm very unhappy at the outcome & I think it is completely inappropriate, but we feel that we are up against the system.  
My aunt that retired from being a traffic cop a good twenty years ago found out about this driver improvement course outcome & rang us up tonight saying she wanted to write a letter of complaint- that in her day it would have been 6 points, end of story.  

I have been trying to call my Union's legal team to initiate a claim for his bike & injuries, but not got through yet.  His mum's union will also take on personal injury claims for family members, but are there other options?

I'm interested in what anyone thinks we should do?  I'm keen on not learning the hard way, having never done this before, so if anyone has experience they don't mind sharing to avoid pitfalls, please do.
I have been really upset by the whole thing, but I do have a thick skin- if people think we need to just accept it, I'm happy to hear why.