
I did reply to one of your threads that you need to socialise your dog, as it seems she is frustrated.
At training classes she can learn to interact with other dogs in a controlled manner. Then you can progress on walks to approaching other owners with a much more controlled dog and ask if they will allow their dog to meet and play with yours.
This approach is a win win situation as it reasures other dogs owners and stops your poor bitch from being frustrated and freindless.
Also at classes your are likely to make friends and can arrange walks with other owners for your dogs to play.