What type of lawsuit do I file for the below situation?

You have every right to be upset, but I don't believe that a civil lawsuit is likely to succeed because, although you were emotionally tortured, you suffered no monetary damages directly attributable to the bus company's wrongful conduct.  What you've described would probably closest to the tort of "negligent infliction of emotional distress."  The problem is that, in the jurisdictions in which I practice (it is possible that the law is different in MN) that tort requires some sort of relationship and duty running from the tortfeasor to the claimant.  The bus company had no duty to you. This is not to say that you have no chance of redress.  The bus company's actions could give rise to a criminal charge (impeding a police investigation or the like) and you may want to urge your local prosecutor to prosecute.  Also, you may gain some satisfaction by attempting to publicize the bus company's callousness in the media and consumer protection and advocacy groups.  Also, a complaint to the bus company itself may cause it to offer you some compensation, in fear of the bad publicity your story can generate. I'm very glad your daughter is safe.