Probably does not matter how you file. If there is negligence the insurance company may likely pay the $100,000 into court and name all the claimant to the pool of money in the suit. If the nine cannot agree on a split, a Judge or Jury will decide what is the $$ allocation.
I jury tried a similar case about 10-15 years ago. You must prove homeowner or builder negligence to have a case. If the work was done over eight years ago the builder may be out under the statute of respose. The homowner has a duty to inspect the premises. Was an investigation done after the collapse? What was the cause? Did it occur less than two years ago? Was anyone injured severely?
It would be unusual to do a mock trial in a small injury case. However, it would depend on how much time is devoted to this exercise by the attorney handling the case. It could be very simple and just basic trial preparation.
Your friend is fortunate to have found an attorney who would try a minor injury case.
Contact an attorney in Savannah, if you have not done so. We can help refer you to someone competent if you wish. If you have a case against the owner of the dog [leash law violation, etc] and they have insurance you might be able to obtain some justice. The attorney may know doctors who will treat you on a lien basis [paid from proceeds of suit or claim] and help you get some care.
Most importantly, have your case reviewed by another attorney to see how much merit there is to your case and see if you can hire someone to help you.
If a suit is filed, the other attorney would have to get permission from the Judge to withdraw. This requires notice to you and an order from the Judge.
You may have recourse beyond the suit but that is another matter and I don't want to prejudge the attorney's conduct.