It certainly sounds like you are feeding her correctly. Like someone else said, she may just be a fast grower. I just find it interesting that even though I've been accused of powerfeeding my snakes (though I disagreed with it) mine are much smaller than yours are at their respective ages.
Ask a few more people and I'm sure you'll find my snakes are about average.
Around where I live, the cornsnake owners that I know have snakes comparable to mine at the same ages.
I don't claim to be an expert but I've done a lot of reading about corns in the last 18 months.
I don't claim to know everything either. I'm not saying I do. I know I'm always learning something new about my cornsnakes.
I also think the fact that I am a physician gives me a leg up in caring for animals.
It may give you a leg up, but considering I worked as a vet assistant and I have a Zoology and Pre-Vet degree that should have given me a leg up too. But I know for a fact that I knew very little about how to care for a snake when I got my first one. Heck, most vets don't know how to care for snakes. Experience, I have found, is the only way to figure out the correct ways to do things.
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alstiver@hotmail.com
Current snakes:
1.0 2001 Hypo snow cornsnake
0.1 2002 Pastel Ghost cornsnake
1.1 2002 Bloodred cornsnakes
To be added when it gets warmer:
0.1 1998 Het Hypo, Het Caramel cornsnake
1.0 2000 Hypo Het Caramel cornsnake