After the traffic accident responsibility is determined, the accident group informs the remains to be cremated. My question is:

With the supplement of your question, I understand that the perpetrators have been detained, and the first questions 1 and 2 are no longer a problem. You don't have to worry about each other's criminal responsibility. Traffic police departments, procuratorates and courts will follow certain legal procedures. What you have to consider now is really the issue of compensation for the aftermath:

First of all, you have to find out how much compensation you can get according to the law;

In fact, you should pay attention to the fact that the other party's family members are unwilling to pay compensation, mainly considering that after compensation, the perpetrator may be sentenced, so you refuse to pay compensation, and you can go back to work. It will play a positive role in determining the criminal responsibility and sentencing of the perpetrator.

Third, understand the relationship between the actor and the owner of the vehicle. If it is found that the owner is not the perpetrator but someone else, the owner will also be liable for compensation, giving you one more clue to claim;

Fourth, you should start to understand which compulsory insurance company is responsible for the vehicle accident, and the amount of insurance compensation, so as to prepare for your claim.

Fifth, after the perpetrators are brought to court, they begin to prepare materials and file criminal incidental civil proceedings.

the above steps are actually very complicated, and it is difficult for ordinary parties to complete them completely. I suggest that you hire a lawyer to assist you. If you are under too much financial pressure to afford the lawyer's fees, I suggest you go to the legal aid center under the local judicial bureau and talk to a legal aid lawyer to see if you can apply for legal aid.

good luck!