I’m shocked…Casco damage and replacement value

Hello, must confess that I am very shocked. My wife had a self-inflicted accident (she didn’t happen much… luck had had) But now some data about the damage: The damaged car is a well equipped Smart Fortwo convertible pulse with various extras and a list price incl extras of 18.400 Euro (invoice available) EZ 08/2005 mileage 34000km and at least good general condition accident damage front, both airbags open, front window en now to my actual concern. Report with the following basic data received: Repair incl. VAT 10,600 Euro (parts and varnish 5900 Euro net, wage 3000 Euro net) Replacement value 8,400 Euro Residual value with offer 3,900 Euro Comparable vehicles with mobile not less than 10000 Euro It is not possible that such a favorable replacement value and at the same time a dream price for the pitiful Schrotstämmel is set, or yet? What can I do against it? Have your own report prepared at your own expense and seek legal assistance? Greetings yoshii