I'm so glad that you were able to get the video and that your mom is able to aid and support you. Hopefully the police chief will be able to help get this straightened out. Sounds like the officer was persuaded by whatever emotions were involved with hearing the initial story or was manipulated by a calm concoction? Not sure which.
It's too bad you don't live in a collision mandated state :\ We get to option comprehensive here but not collision.