We began by talking him out with 3 other dogs , all of which like to run and play. We initially kept her an a tight lead and observed her behaviour. True enough she growled and snapped at the other dogs, but it was also clear that she was frustrated about not being able to run free and perhaps the behaviour was not aggressive but more likely defensive and based on fear and lack of confidence.

 On subsequent walks over the next few days , her behaviour improved, although we still kept her on a lead, we were much more relaxed with her. On day 5 it became clear that she had developed so well that at the end of the walk , she insisted on jumping in the cages in the van with the other 3 dogs, rather than have her own cage.  She had obviously overcome her fear. On day 6 she was allowed to run free with the other dogs and enjoy playing and running without constraint. 

I am sure that there will be setbacks in the coming days and weeks but she is now a totally different dog, loves coming out for a walk and enjoys the company of other dogs.

It tremedously rewarding to help with problems, and often it just reqiures patience, perserverence and understanding.