Dented down tube

I wonder if anyone can help. My wife crashed into a maximum height barrier with my MTB on the roof. The bike and roof rack came clean off. The impact was head on the carbon forks, causing scratching but i cant see if anything has compromised their strength. There is also a 7cm dent towards the bottom of the down tube. Would you consider this a write off? Its a £1500 MTB Beone Karma Sport.
Newbie Road Biker and curious MTB'r
Trek 2.1 Alpha Road Bike
Beone Karma 2010 MTB
Claud Butler Chinook Hybrid
Trek 2.1 Alpha Road Bike
Beone Karma 2010 MTB
Claud Butler Chinook Hybrid
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Trek 2.1 Alpha Road Bike
Beone Karma 2010 MTB
Claud Butler Chinook Hybrid
Trek 2.1 Alpha Road Bike
Beone Karma 2010 MTB
Claud Butler Chinook Hybrid
Much prefer my bike in the car - just in case the wife drives us... ;-)