Help! My puppy chewed on a computer wire and was electrocuted!?

My brother found my puppy laying down next to a computer wire, unmoving. When he went around to move her, her mouth was stuck on the wire so he pulled the plug to free her. When the plug was pulled, she started shrieking in a sound we've never heard, and started running incredibly fast around the house before hiding in a small corner. For half an hour now, she's just stared at everything and is making a low growling, whimpering sound. What happened to her?