That's a pity, Rob, as I am a mine of information on Dartmoor CB's!
Assuming (after those eloquently put words) that you are still married, then these campsites that I know of might be of interest to you and your 'filly'.
There is a decent campsite in Princetown next to that all important pub, GR 591 734.
There is the Poundsgate site at 706 722. Nearby there is a cycle hire outlet.
There is also a site at Holme, GR-707 696.
You didn't say what part of Dartmoor you preferred, anywhere in particular?