Hi mate,
At last some positive news on Frankie.I don’t know if this has been mentioned but now you’ve a good idea of the area she’s in, have you thought of using tracker dogs.I know from personal experience that they can work.when we first got our youngest Beagle he escaped from our garden into the countryside where we live and was missing for hours, so we sent our other Beagle out to see if
he could find him and they both came home together half an hour later.
I‘d be more than happy to bring mine to help search or if you want professional tracker dogs try
http://www.k9tracker.co.uk/
best of luck hopefully your well on your way to getting her back.