I think balls tanke like 7 or 8 years to get that large.
But yes, even full grown snakes should have their time to get acclimated to their enviroment and have a chance to get atleast 1 meal in them. So give her a week, feed her then wait another 48 hours. So 9 days before handling. I know its a long wait, it was torture for me too, but its worth it to make your snake "happy".