The emergency operator who answered the call, Jenny Buchanan, said: "I sensed there was a problem. The dog was too persistent in barking directly into the phone receiver. I knew she was trying to tell me something."
Faith, a four-year-old Rottweiler, is trained to look after her owner - she's a bit like a guide dog but with some different skills.
She knows first aid and is trained to move her owner, Ms Beasley, from Washington, into a special position when she has a seizure, to keep her safe.