I don't know how old Kiera is but this is what helped me a great deal. When WD first saw dogs outside his familiar breed he started barking at them at 12 weeks of age. I was lucky to being able to work with a trainer who asked her clients with social adult dogs to come in a little earlier to class so WD could interact with them. I attened three of those sessions, then took him to to a couple of basic classes, took him to a dog park (no fences) where he had all good experiences and made good friends. I will start him in Agility soon. He does very well with other dogs now.
Deja, GSD, sable WL, female, born 11 / 2013
Cam, Rough Collie, sable, male, born 8/2015