She should go to Duxford or Yeovilton to be displayed alongside the prototypes there. There are very many differences between a prototype and a production Concorde, some quite subtle. AB's gutted interior wouldn't matter for visitors to see those differences first hand.
BTW wouldn't it have been better to have scrapped the shell that DG was in 2003, and donate AB to Brooklands instead at end of Concorde services, while she was still a complete aeroplane, rather than gut AB to give DG an interior?