Oh sorry, my misunderstanding. If she is not even 1000 grams you can still feed every 5-7 days, but some people just switch over to every 10-14 days around that time also. Me personally i feed every 7 days until about 1000 grams, but it also depends on the snake.

If you have other snakes feed them regularly, but make sure to leave the rats in the room thawing or leave the live rats in the room for about 30 minutes before feeding so you "pre-scent" the room, this is going to get her in the mood.

Ball Pythons can go years without food, but most females will go off feed for 2-6 months regularly, so don't worry about her, just give her time.