Kimaya wasn't always on her own. She used to belong to a special unit of canines that were trained to detect a certain virus. This ability alerted the non-infected to anyone around them who was suffering from 'brain resetting." This means that Kimaya was born and raised during a zombie apocalypse. Up until his death, Kimaya was with her trainer every second of the day. She helped him stay safe, but ultimately was the cause of his demise. She simply wasn't as well trained as everyone thought she was.