One thing you might think about doing is switching her to rats. I assume you are buying the mice from Petsmart? (I ask because I know they sell mice in a box) I have a female who won't eat rats, so I'm feeding her medium mice right now. Depending on how big she is, she'll need small or medium mice. The small mice are called Hopper mice (even though the box says small mice) and the medium mice are really weanling mice. My girl is about 100g right now and I have her on weanling mice until she finishes the box and then she'll already be up to large mice. As an adult, she'll need SEVERAL jumbo mice. I would try switching her to small rats after you've given her jumbo mice and you notice that they are simply too small for her. Hopefully she'll take the rats no problem. The good thing about rats is that you don't have to feed quite as many in one sitting. I would recommend getting her on rats sooner rather than later, but Petsmart/Petco only sell small adult rats and none of the small sizes.

That said, if you have access to a local rodent breeder, you can always buy from them. I personally order my rats online. I anticipate how much my snakes eat and bulk order so I'm only paying shipping once. It's a lot to shell out at one time, but it will last you for a while. I have a 160g girl on rat fuzzies (almost big enough for rat pups) but in my freezer I have rat pinkies, fuzzies, and pups. When she outgrows the pups, I'll be purchasing larger rats and larger mice for my mouse eaters. I'll also be selling my leftovers so they don't go to waste. Just something to think about.