I'm good with live and let live. But my SO's Honda Fit was just demolished by a modern truck who "didn't see her" despite having a clear line of sight down the

I'm good with live and let live. But my SO's Honda Fit was just demolished by a modern truck who "didn't see her" despite having a clear line of sight down the road--but due to the relative slope, I suspect the Fit was obscured by the truck hood. She was in pain for 6 weeks. So where is live and let live?