Bad luck mate, taking her out to the country would be the right thing to do, it's where she's happiest. I had a bullterrier that hated the vets, he'd start shivering by the door, when the time came I got the vet to come round to my house, nice sunny day, he was calm and lying in the garden when the vet came round so his last minutes there was no stress. Our dogs give there all for us, so when the time comes we should do right by them. all the best.