If your snake isn't a piggy, lol, it can take some time to find her favorite eating routine. One of my guys only eats in his hide. . .I put the rat's head in the entrance of his hide, if I flop it around sometimes he'll strike, other times I just leave it there and he eats it later. No watching, no movement, and if I pick up his hide he definitely won't eat. He's a shy eater.
My other guy likes it when I make the mouse "run around" the tank (I bought 10-in tongs; the others I had weren't long enough), then poke its nose inside his hide, then retreat. He always strikes just when I pull the mouse back. And, yeah, he strikes fast and it always startles me, haha. Then I tug on its tail and wiggle it around for about 10 seconds to keep his instincts sharp.
Anyway, make sure the rodent is good and warm, and just go by what she seems to want.