Road accident

My husband driving car from Durga puri chowk going toward dilshad garden (delhi). In between there is a Nand nagri fly over.His speed was approx 40 km.Suddenly a boy come in front of his car from divider side,my husband takes brake but boy was hit.He immediately take him to GTB hospital.Doctor said that his femur bone is broken. Eye witness said to police that boy was running to catch kite on that road.But police lodge Fir against my husband under IPC 279/337that we was driving fast car and he was un consciously and boy was crossing road.In mean while some one stolen my husband purse ,in which some important docs like D.L.,Adhar card,AtM,and rs7000 was there.We have lodge computerized Fir against that and applied duplicate for all.Another problem is that our insurance was also expired.Our car and rc was taken by police.please suggest what should we do.Can we also file Fir against Boy's parents for there irresponsible behavior.Boy age is only 9 years and he belong to poor family.His father is blind.They belongs to muslim community.