i see negligent parents everywhere in PK and i have never understood how/why they have kids and how they manage to survive their childhood. i think you did the best thing by leaving the scene. too many times the driver gets blamed, but according to the law if they are not crossing the road at a designated crossing (the responsibility of the CDA) then you are not at fault since roads are for cars, not jaywalkers.
something similar happend to me a loooong time back with a motorcyclist, at the end he started to threaten me even thoguh he changed lanes without indicating. when the crowd formed i told them that they can either leave or i would. they (being typical pakistanis) didn't leave so i told the guy on the bike that i could not talk to him in a civilized manner with all these "theelis" around so i just got in my car and left.
if you are young, people alwys blame you and sometimes they even go as far as saying you were drunk,... how stupid can our people be???
give sadqa and keep your eyes open.