Sorry about the accident and I'm glad that everyone is ok.
As others have said, this is a time to be diligent, checking details, and making sure that you get what you have been paying for. Try to keep the adjusters moving along so it doen't get lost.
I have had an insurer tell me that they were going to total my car, only to discover that the adjuster had configured my vehicle as a base model without any options, a configuration that was never sold. It went downhill from there. I stuck to what I knew to be right until they got the details right, and ultimately got the car repaired, but it was both a long process and a learning experience. IIRC, not only did the State Insurance commission get involved, but the insurer later washed up in the Attorney General's office as it turned out their adjusters were taking kickbacks from body shops. Big stink. I changed insurers as soon as the car was repaired to one of the big companies, and have been quite happy since.
The irony of the story was it was my mechanic who had the accident, and he did not lift a finger to help, beyond charging me storage fees for only the first thirty days he had my car on his lot. I was more than a little surprised that he did not take any ownership of the accident. It was too bad; he was a really good mechanic and his body shop did great work.
Live and learn. The process is not simple, and honest mistakes do happen, but do be clear on what your policies entitle you to.
All the best,
Peter