Families of someone who died from their burn injuries can file a wrongful death lawsuit against the responsible party. This is the same as a negligence lawsuit, but with a death involved. You still need to show that the defendant acted unreasonably under the circumstances. In Arizona, the wrongful death law states that the surviving spouse has the first right to file a lawsuit. The children can join the lawsuit, although a family can file only one claim. The plaintiffs will usually agree on how to divide the proceeds. If they cannot agree, there will be a further court proceeding to figure out how to split the money.
If there is no surviving spouse, the children will jointly file a lawsuit. If a child died from burn injuries, the parents need to file a wrongful death lawsuit.