$5700 ER bill for an ice pack and refusal of treatment: https://www.vox.com/2018/5/1/17261488/er-expensive-medical-b... this is what's broken in America today.
???
If you're young and healthy and you lightly bang your head on a table, you don't need the ER! It sounds like she wasn't even concussed! Sure, get checked out by a doctor, but this isn't a life or death situation, so don't clog up ER triage with your BS.
That's like breaking your toe and calling an ambulance.