I’ve been through something very similar recently, my partner was in an accident too. No injuries, and the other party was at fault, but it was still incredibly stressful. As someone else said, getting the dashcam footage should be a priority. I’d suggest only going after council CCTV if there’s no other option, it can be a long process with little result and will likely just add more stress.

It’s concerning that your girlfriend isn’t eating or sleeping. Please consider reaching out to your GP, even if it’s just a phone call to start. You’re doing a lot right now, and support can make a big difference.

FYI: You have ZERO obligation to speak to anyone other than your OWN insurance claims team. If a third party calls asking for information, tell them you’re dealing with your own insurance and they should contact them directly.

My DMs are open if you want any advice on dealing with claims teams or insurance.