Magyk was named Magyk because when we first got her, she was rather flighty. We would walk past her cage and she would be in one spot, then gone to hide. We used to joke that it looked like she could apparate so we thought Magic would be a good name, but I thought the spelling of Magyk looked cooler when I saw it on the cover of one of my books.
It's rather funny now, because she's obsessivly looking for attention whenever you go by the cage these days, completely different from how she used to be.