During the storm last weekend, a rather heavy slate disc fell onto my car and has left a big dent in the body. I was stumped at first as to where it had come from until i realised that it had come from my neighbours chimney. Its a chimney cap that must have been up there for a near century but chose that day to ruin my car 

I contacted my insurer to put in a claim but then thought: this is damage caused by my neighbours house, why should I jeopardise my ncd? I told my neighbour about it as I thought she would need to put in a claim for her chimney anyway. She contacted her home insurance and they said they wont pay out. She told me that it was an accident and will offer to pay half the cost to repair my car if I don't go through my insurance. AIBU to think she could sort this out through her home insurance as it was her property that caused the damage?