Here is a summary of Small Claims court in VA. Sometimes just the threat of going to court is enough to get the other person to pay up because in court besides the actual damage cost you can ask for reimbursement of court fees and the cost of your time to take off of work to be in court. I can not say if a judge would award you everything but the dollar signs add up even just for a threat.

You can let them know something like "I am reaching out to you one last time before I file a formal suit in court where I will be seeing my repair costs, court fees, and compensation for the day off of work I will need to take to attend. I would still like to work this out between ourselves directly or with your insurance company but I will take these next steps if this is not resolved"

I am not a lawyer and no one would ever mistake me for one, this is just my own opinion of your options