It really depends on her feeding habits.
If she's a picky eater, probably not. If she's a great voracious eater, possibly towards the end of the season (maybe closer towards early next year).
How was her growth rate been so far with her breeder?
All snakes grow at their own rate.
I have three Dec/2011 girls in the 400 range. And I have one mojo Dec/2011 girl who is a monster pig and chows down everything. She's already 800 grams and she's the youngest out of the bunch. I don't power feed, but she has never missed a meal.