DO NOT force feed it just stresses the snake out more when you do that, I would assist feed, meaning put the mouse, or rat in its mouth instead of down its throat and see if it restricts and eats. It seems like shes taking food pretty well if she ate 3 meals in less than a week. If shes taking food like that I would keep going to get her nice and big just try to keep it two meals a week. Good luck!

-Payson!