My 7yr old dog has always been a bit scared of loud noises - hates fireworks, guns etc. But it has got so bad she is terrified of almost all her dog walks. There are always bird scarers or guns going off on all our local walks and she just shakes and if off lead will try and run home. If on lead she just won't go any further. I am at a loss on what to try with her to get her over this. Any suggestions?