She's only proven in the fact that last year all of her offspring were granites(neck breaks, flames, lots of black, clear bellies, defined granite markings in the alien heads, EVIL!). All 5 were female also. I still have 3 of them, and a friend has another one of the sisters. She's such a sweet snake, except on feeding day(she launches herself at anything). I like getting 6 snakes for $40 ;)
We'll see!