advice on proceeding with discovery on auto accident case

My wife recently received instructions from the state prosecution or at 
court to make arrangement for restitution on auto accident claim in 
return for dropping an evasion charge against her. With no auto 
insurance in force at the time of the accident, it would our sole 
responsibility for this. However, no estimate or claim has been sent or 
provided to us for nearly a month for the damaged caused. The only proof 
of claim was a copy filed with the prosecutor, which could not be 
legally provided to us by the court. Only the injured party could 
provide the copy per court rules and there has been only limited verbal 
contact by that party and it is their claim that we know the dollar 
amount claimed (I only got a glimpse at a court folder of some $1600 
figure but no actual estimate was handed to me) so no estimate or bill 
needed to be given to us. My view on this is that no restitution can 
begin without a reasonable request for paperwork be honored by the other 
party. We have a return date early next month on this but I am uncertain 
that any arrangement can be made given this lack of cooperation by the 
other party. I have stated by intention to reasonable restitution be 
made to the other party but that is only possible by seeing some 
estimates or billing on the claim. Any advice?