It's not frequency of feeding, it's amount fed.
At that size all they want to do is eat. Switching to a weekly rabbit feeding, even every 10 days for the next few feet of growth will help mellow the snake out, providing it's just not one of the few who are simply mean.
Be sure to tickle her with something before you clean from now on and watch her eyes before you start. They move and you can read them, eventually.
You'll be laughing heartily soon.