My question involves a traffic accident in the State of: Ohio
Friend of mine was rear-ended. The other driver called her father to the scene - father looked at the damage to my friend's car and proclaimed that he didn't think the damage didn't match a rear-end accident and therefore must have been pre-existing - and refused exchange details. I asked if the police were called to the scene but I haven't heard back yet.
My friend had filed an insurance claim but doesn't expect a decision for a few days or even weeks. In the meantime I was hooping to put her mind at ease if possible.
Question: Who has the burden to proof WRT "Was the damage pre-existing"? The other driver, or my friend?

